{"id":9866,"date":"2026-10-25T16:45:22","date_gmt":"2026-10-25T09:45:22","guid":{"rendered":"https:\/\/longvan.net\/cong-dong\/?p=9866"},"modified":"2026-10-26T19:22:59","modified_gmt":"2026-10-26T12:22:59","slug":"huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell","status":"publish","type":"post","link":"https:\/\/longvan.net\/cong-dong\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn c\u1eadp nh\u1eadt pfSense x\u1eed l\u00fd l\u1ed7 h\u1ed5ng PHP2Shell"},"content":{"rendered":"<p>PHP2Shell l\u00e0 t\u00ean g\u1ecdi c\u1ee7a hai l\u1ed7 h\u1ed5ng nghi\u00eam tr\u1ecdng trong PHP, m\u00e3 \u0111\u1ecbnh danh <strong>CVE-2026-109618<\/strong> v\u00e0 <strong>CVE-2026-109619<\/strong>. Netgate x\u00e1c nh\u1eadn c\u00e1c l\u1ed7 h\u1ed5ng n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn pfSense do h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng PHP cho giao di\u1ec7n qu\u1ea3n tr\u1ecb WebGUI v\u00e0 d\u1ecbch v\u1ee5 Captive Portal.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng tin v\u00e0 h\u01b0\u1edbng d\u1eabn ki\u1ec3m tra, c\u1eadp nh\u1eadt pfSense d\u00e0nh cho kh\u00e1ch h\u00e0ng \u0111ang s\u1eed d\u1ee5ng Cloud Server t\u1ea1i Long V\u00e2n.<\/p>\n<h3>I. Th\u00f4ng tin l\u1ed7 h\u1ed5ng v\u00e0 ph\u1ea1m vi \u1ea3nh h\u01b0\u1edfng<\/h3>\n<ul>\n<li>T\u00ean l\u1ed7 h\u1ed5ng: PHP2Shell<\/li>\n<li>M\u00e3 CVE: CVE-2026-109618 v\u00e0 CVE-2026-109619<\/li>\n<li>Th\u00e0nh ph\u1ea7n \u1ea3nh h\u01b0\u1edfng: PHP s\u1eed d\u1ee5ng b\u1edfi pfSense WebGUI v\u00e0 Captive Portal<\/li>\n<li>T\u00e1c \u0111\u1ed9ng: C\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1ef1c thi m\u00e3 t\u1eeb xa n\u1ebfu d\u1ecbch v\u1ee5 PHP b\u1ecb truy c\u1eadp t\u1eeb m\u1ea1ng kh\u00f4ng tin c\u1eady.<\/li>\n<\/ul>\n<p>Theo Netgate, pfSense WebGUI m\u1eb7c \u0111\u1ecbnh ch\u1ec9 truy c\u1eadp \u0111\u01b0\u1ee3c t\u1eeb m\u1ea1ng n\u1ed9i b\u1ed9 LAN. Captive Portal c\u0169ng kh\u00f4ng \u0111\u01b0\u1ee3c b\u1eadt m\u1eb7c \u0111\u1ecbnh. V\u00ec v\u1eady, r\u1ee7i ro t\u0103ng cao khi WebGUI \u0111\u01b0\u1ee3c m\u1edf ra Internet ho\u1eb7c Captive Portal ph\u1ee5c v\u1ee5 c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng tin c\u1eady.<\/p>\n<p>L\u1ed7 h\u1ed5ng n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea7n m\u1ec1m pfSense, kh\u00f4ng \u0111\u1ed3ng ngh\u0129a c\u00e1c Cloud Server \u0111\u1eb7t ph\u00eda sau firewall t\u1ef1 \u0111\u1ed9ng b\u1ecb \u1ea3nh h\u01b0\u1edfng. N\u1ebfu m\u00e1y ch\u1ee7 c\u1ee7a qu\u00fd kh\u00e1ch t\u1ef1 c\u00e0i PHP \u0111\u1ec3 ch\u1ea1y website ho\u1eb7c \u1ee9ng d\u1ee5ng, c\u1ea7n ki\u1ec3m tra v\u00e0 c\u1eadp nh\u1eadt PHP ri\u00eang tr\u00ean m\u00e1y ch\u1ee7 \u0111\u00f3.<\/p>\n<h3>II. Ki\u1ec3m tra h\u1ec7 th\u1ed1ng c\u00f3 c\u1ea7n c\u1eadp nh\u1eadt hay kh\u00f4ng<\/h3>\n<h4>1. Ki\u1ec3m tra phi\u00ean b\u1ea3n pfSense<\/h4>\n<p>\u0110\u0103ng nh\u1eadp v\u00e0o giao di\u1ec7n WebGUI v\u00e0 ghi l\u1ea1i phi\u00ean b\u1ea3n pfSense \u0111ang s\u1eed d\u1ee5ng t\u1ea1i trang t\u1ed5ng quan ho\u1eb7c m\u1ee5c c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng.<\/p>\n<p>Netgate \u0111\u00e3 cung c\u1ea5p g\u00f3i PHP c\u1eadp nh\u1eadt cho c\u00e1c phi\u00ean b\u1ea3n sau:<\/p>\n<ul>\n<li>pfSense Plus 26.07\u00a0 &#8211;&gt;\u00a0 PHP 8.5.12<\/li>\n<li>pfSense Plus 26.03.1 &#8211;&gt; PHP 8.5.12<\/li>\n<li>pfSense CE 2.9.0 &#8211;&gt; PHP 8.5.12<\/li>\n<li>pfSense CE 2.8.1 &#8211;&gt; PHP 8.3.36<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9867 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_1.png\" alt=\"\" width=\"1317\" height=\"178\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_1.png 1317w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_1-300x41.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_1-1024x138.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_1-768x104.png 768w\" sizes=\"auto, (max-width: 1317px) 100vw, 1317px\" \/><\/p>\n<p>V\u1edbi phi\u00ean b\u1ea3n t\u1eeb 2.7.0 c\u1ea7n thao t\u00e1c update l\u00ean 2.8.1, qu\u00fd kh\u00e1ch c\u00f3 th\u1ec3 thao t\u00e1c \u0111\u1ed5i repo v\u1ec1 repo Long V\u00e2n \u0111\u00e3 chu\u1ea9n b\u1ecb \u0111\u1ec3 vi\u1ec7c c\u00e0i \u0111\u1eb7t c\u00e1c g\u00f3i c\u1eadp nh\u1eadt \u0111\u01b0\u1ee3c nhanh h\u01a1n theo h\u01b0\u1edbng d\u1eabn \u1edf d\u01b0\u1edbi.<\/p>\n<h4>2. Ki\u1ec3m tra quy\u1ec1n truy c\u1eadp WebGUI t\u1eeb WAN<\/h4>\n<p>R\u00e0 so\u00e1t firewall rules tr\u00ean giao di\u1ec7n WAN v\u00e0 x\u00e1c nh\u1eadn kh\u00f4ng c\u00f3 rule cho ph\u00e9p truy c\u1eadp WebGUI t\u1eeb Internet ho\u1eb7c c\u00e1c m\u1ea1ng kh\u00f4ng tin c\u1eady.<\/p>\n<p>Qu\u1ea3n tr\u1ecb WebGUI n\u00ean gi\u1edbi h\u1ea1n trong m\u1ea1ng LAN, VPN ho\u1eb7c c\u00e1c \u0111\u1ecba ch\u1ec9 IP qu\u1ea3n tr\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c cho ph\u00e9p. Kh\u00f4ng n\u00ean m\u1edf WebGUI tr\u1ef1c ti\u1ebfp ra Internet n\u1ebfu kh\u00f4ng th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n<h4>3. Ki\u1ec3m tra Captive Portal<\/h4>\n<p>V\u00e0o m\u1ee5c <strong>Services<\/strong> &gt; <strong>Captive Portal<\/strong> \u0111\u1ec3 ki\u1ec3m tra Captive Portal c\u00f3 \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng hay kh\u00f4ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9868 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_2.png\" alt=\"\" width=\"1302\" height=\"299\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_2.png 1302w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_2-300x69.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_2-1024x235.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_2-768x176.png 768w\" sizes=\"auto, (max-width: 1302px) 100vw, 1302px\" \/><\/p>\n<p>N\u1ebfu kh\u00f4ng s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 n\u00e0y, h\u00e3y t\u1eaft \u0111\u1ec3 gi\u1ea3m b\u1ec1 m\u1eb7t t\u1ea5n c\u00f4ng. N\u1ebfu \u0111ang s\u1eed d\u1ee5ng, c\u1ea7n \u01b0u ti\u00ean c\u1eadp nh\u1eadt pfSense s\u1edbm do Captive Portal c\u00f3 th\u1ec3 ti\u1ebfp nh\u1eadn k\u1ebft n\u1ed1i t\u1eeb c\u00e1c thi\u1ebft b\u1ecb ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c.<\/p>\n<h3>III. Chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi c\u1eadp nh\u1eadt<\/h3>\n<h4>1. Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n c\u1eadp nh\u1eadt, qu\u1ea3n tr\u1ecb vi\u00ean n\u00ean:<\/h4>\n<p>&#8211; Sao l\u01b0u c\u1ea5u h\u00ecnh pfSense.<br \/>\n&#8211; L\u00ean l\u1ecbch b\u1ea3o tr\u00ec \u0111\u1ec3 h\u1ea1n ch\u1ebf gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5.<br \/>\n&#8211; B\u1ea3o \u0111\u1ea3m c\u00f3 th\u1ec3 truy c\u1eadp console n\u1ebfu k\u1ebft n\u1ed1i m\u1ea1ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<br \/>\n&#8211; N\u1ebfu \u0111ang qu\u1ea3n tr\u1ecb qua WireGuard, chu\u1ea9n b\u1ecb ph\u01b0\u01a1ng \u00e1n truy c\u1eadp thay th\u1ebf. Qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n k\u1ebft n\u1ed1i WireGuard.<\/p>\n<p>N\u1ebfu n\u1ec1n t\u1ea3ng Cloud Server \u0111ang s\u1eed d\u1ee5ng c\u00f3 h\u1ed7 tr\u1ee3 snapshot, qu\u00fd kh\u00e1ch c\u00f3 th\u1ec3 t\u1ea1o snapshot tr\u01b0\u1edbc khi c\u1eadp nh\u1eadt \u0111\u1ec3 c\u00f3 ph\u01b0\u01a1ng \u00e1n kh\u00f4i ph\u1ee5c khi c\u1ea7n thi\u1ebft.<\/p>\n<h4>2. H\u01b0\u1edbng d\u1eabn \u0111\u1ed5i repo pfsense \u0111\u1ec3 update version PFSense.<\/h4>\n<p><strong>B\u01b0\u1edbc 1. M\u1edf c\u1ea5u h\u00ecnh repo c\u1ee7a pfsense v\u1edbi tr\u00ecnh so\u1ea1n th\u1ea3o ee<\/strong><\/p>\n<blockquote><p>ee \/usr\/local\/etc\/pkg\/repos\/pfSense.conf<\/p><\/blockquote>\n<p><strong>B\u01b0\u1edbc 2. \u0110i\u1ec1u ch\u1ec9nh th\u00f4ng tin repo v\u00e0 phi\u00ean b\u1ea3n mu\u1ed1n c\u1eadp nh\u1eadt<\/strong><\/p>\n<p>C\u1ea5u h\u00ecnh ban \u0111\u1ea7u :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9876 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_6.png\" alt=\"\" width=\"1126\" height=\"689\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_6.png 1126w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_6-300x184.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_6-1024x627.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_6-768x470.png 768w\" sizes=\"auto, (max-width: 1126px) 100vw, 1126px\" \/><\/p>\n<p>C\u1ea5u h\u00ecnh sau ch\u1ec9nh s\u1eeda:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9877 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_7.png\" alt=\"\" width=\"1128\" height=\"678\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_7.png 1128w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_7-300x180.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_7-1024x615.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_7-768x462.png 768w\" sizes=\"auto, (max-width: 1128px) 100vw, 1128px\" \/><\/p>\n<p>\u2192 \u1ea5n <strong>ESC \u2192 Enter \u2192 Enter<\/strong> \u0111\u1ec3 l\u01b0u v\u00e0 tho\u00e1t tr\u00ecnh ch\u1ec9nh s\u1eeda<\/p>\n<p><strong><em>L\u01b0u \u00fd:<\/em><\/strong><\/p>\n<ul>\n<li>url: \u0111i\u1ec1u ch\u1ec9nh sang c\u1ea5u h\u00ecnh http:\/\/repo-pfsense.longvan.io\/K\u00c8M_PHI\u00caN_B\u1ea2N_C\u1ea6N_N\u00c2NG_C\u1ea4P<\/li>\n<li>mirror_type: thi\u1ebft l\u1eadp \u201cnone\u201d v\u00ec m\u1eb7c \u0111\u1ecbnh srv chuy\u1ec3n v\u1ec1 c\u00e2n b\u1eb1ng t\u1ea3i pfsense m\u1eb7c \u0111\u1ecbnh<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 3. C\u1eadp nh\u1eadt t\u1ea3i l\u1ea1i repo<\/strong><\/p>\n<blockquote><p>pkg update -f<\/p><\/blockquote>\n<p><strong>B\u01b0\u1edbc\u00a0 4. T\u1ea3i tr\u01b0\u1edbc g\u00f3i \u0111\u1ec3 chu\u1ea9n b\u1ecb n\u00e2ng c\u1ea5p<\/strong><\/p>\n<blockquote><p>pkg-static -4 fetch -y -a<\/p><\/blockquote>\n<p><strong>B\u01b0\u1edbc 5. N\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng (upgrade pfsense)<\/strong><\/p>\n<blockquote><p>pfSense-upgrade -d<\/p><\/blockquote>\n<p>sau khi ch\u1edd upgrade ho\u00e0n t\u1ea5t ki\u1ec3m tra l\u1ea1i version PFsense v\u00e0 thao t\u00e1c c\u1eadp nh\u1eadt g\u00f3i PHP.<\/p>\n<h3>IV. C\u1eadp nh\u1eadt g\u00f3i PHP tr\u00ean pfSense<\/h3>\n<p>Netgate l\u01b0u \u00fd g\u00f3i PHP c\u1eadp nh\u1eadt c\u1ea7n \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t qua **SSH ho\u1eb7c console**. Kh\u00f4ng th\u1ef1c hi\u1ec7n c\u1eadp nh\u1eadt g\u00f3i n\u00e0y th\u00f4ng qua WebGUI ho\u1eb7c Nexus GUI.<\/p>\n<h4>Ph\u01b0\u01a1ng ph\u00e1p 1: C\u1eadp nh\u1eadt c\u00e1c g\u00f3i v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i pfSense (khuy\u1ebfn ngh\u1ecb)<\/h4>\n<p>\u0110\u0103ng nh\u1eadp v\u00e0o shell pfSense qua SSH ho\u1eb7c console, sau \u0111\u00f3 ch\u1ea1y:<\/p>\n<blockquote><p>pfSense-upgrade -c &amp;&amp;<br \/>\npkg upgrade -y &amp;&amp;<br \/>\npkg upgrade -fy pfSense-pkg-WireGuard &amp;&amp;<br \/>\n\/etc\/rc.reboot<\/p><\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9869 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_3.png\" alt=\"\" width=\"1497\" height=\"72\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_3.png 1497w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_3-300x14.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_3-1024x49.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_3-768x37.png 768w\" sizes=\"auto, (max-width: 1497px) 100vw, 1497px\" \/><\/p>\n<p>pfSense s\u1ebd c\u1eadp nh\u1eadt c\u00e1c g\u00f3i, c\u00e0i l\u1ea1i g\u00f3i WireGuard n\u1ebfu c\u00f3 v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i h\u1ec7 th\u1ed1ng. Trong qu\u00e1 tr\u00ecnh n\u00e0y, c\u00e1c k\u1ebft n\u1ed1i \u0111i qua firewall c\u00f3 th\u1ec3 b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n<h4>Ph\u01b0\u01a1ng ph\u00e1p 2: C\u1eadp nh\u1eadt g\u00f3i v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i c\u00e1c d\u1ecbch v\u1ee5 WebGUI<\/h4>\n<p>C\u00f3 th\u1ec3 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y khi kh\u00f4ng mu\u1ed1n kh\u1edfi \u0111\u1ed9ng l\u1ea1i to\u00e0n b\u1ed9 pfSense:<\/p>\n<blockquote><p>pfSense-upgrade -c &amp;&amp;<br \/>\npkg upgrade -y &amp;&amp;<br \/>\npkg upgrade -fy pfSense-pkg-WireGuard &amp;&amp;<br \/>\n\/etc\/rc.php-fpm_restart &amp;&amp;<br \/>\n\/etc\/rc.restart_webgui &amp;&amp;<br \/>\n\/etc\/rc.captiveportal_configure<\/p><\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9870 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_4.png\" alt=\"\" width=\"1586\" height=\"52\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_4.png 1586w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_4-300x10.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_4-1024x34.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_4-768x25.png 768w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_4-1536x50.png 1536w\" sizes=\"auto, (max-width: 1586px) 100vw, 1586px\" \/><\/p>\n<h4>Ph\u01b0\u01a1ng ph\u00e1p 3: C\u1eadp nh\u1eadt v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i WebGUI<\/h4>\n<p>Ch\u1ec9 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y n\u1ebfu h\u1ec7 th\u1ed1ng <strong>kh\u00f4ng s\u1eed d\u1ee5ng Captive Portal<\/strong><\/p>\n<blockquote><p>pfSense-upgrade -c &amp;&amp;<br \/>\npkg upgrade -y &amp;&amp;<br \/>\npkg upgrade -fy pfSense-pkg-WireGuard &amp;&amp;<br \/>\n\/etc\/rc.php-fpm_restart &amp;&amp;<br \/>\n\/etc\/rc.restart_webgui<\/p><\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9871 size-full\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_5.png\" alt=\"\" width=\"1595\" height=\"69\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_5.png 1595w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_5-300x13.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_5-1024x44.png 1024w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_5-768x33.png 768w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_5-1536x66.png 1536w\" sizes=\"auto, (max-width: 1595px) 100vw, 1595px\" \/><\/p>\n<h4>V. Ki\u1ec3m tra sau khi c\u1eadp nh\u1eadt<\/h4>\n<p>Sau khi qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt ho\u00e0n t\u1ea5t:<\/p>\n<p>1. \u0110\u0103ng nh\u1eadp l\u1ea1i v\u00e0o WebGUI.<br \/>\n2. Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a WebGUI, VPN, firewall rules v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 \u0111ang s\u1eed d\u1ee5ng.<br \/>\n3. N\u1ebfu c\u00f3 s\u1eed d\u1ee5ng Captive Portal, ki\u1ec3m tra l\u1ea1i trang x\u00e1c th\u1ef1c v\u00e0 k\u1ebft n\u1ed1i c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<br \/>\n4. M\u1edf shell v\u00e0 ch\u1ea1y l\u1ec7nh sau \u0111\u1ec3 ki\u1ec3m tra phi\u00ean b\u1ea3n PHP:<\/p>\n<blockquote><p>php -v<\/p><\/blockquote>\n<p>\u0110\u1ed1i chi\u1ebfu phi\u00ean b\u1ea3n hi\u1ec3n th\u1ecb v\u1edbi g\u00f3i PHP \u0111\u00e3 c\u1eadp nh\u1eadt cho phi\u00ean b\u1ea3n pfSense t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<h3>VI. L\u01b0u \u00fd d\u00e0nh cho kh\u00e1ch h\u00e0ng Cloud Server<\/h3>\n<p>&#8211; L\u1ed7 h\u1ed5ng n\u00e0y li\u00ean quan \u0111\u1ebfn PHP b\u00ean trong pfSense; vi\u1ec7c s\u1eed d\u1ee5ng pfSense l\u00e0m firewall kh\u00f4ng t\u1ef1 \u0111\u1ed9ng l\u00e0m cho c\u00e1c m\u00e1y ch\u1ee7 Cloud Server ph\u00eda sau b\u1ecb nhi\u1ec5m.<br \/>\n&#8211; N\u1ebfu WebGUI \u0111ang m\u1edf ra Internet ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111ang s\u1eed d\u1ee5ng Captive Portal, c\u1ea7n \u01b0u ti\u00ean c\u1eadp nh\u1eadt.<br \/>\n&#8211; Tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn c\u1eadp nh\u1eadt ch\u00ednh th\u1ee9c t\u1ea1i <a href=\"https:\/\/www.netgate.com\/blog\/critical-php-security-update\">[Netgate \u2013 Critical PHP Security Update].<\/a><\/p>\n<p>Nh\u01b0 v\u1eady, Long V\u00e2n \u0111\u00e3 h\u01b0\u1edbng d\u1eabn c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra v\u00e0 c\u1eadp nh\u1eadt pfSense \u0111\u1ec3 x\u1eed l\u00fd l\u1ed7 h\u1ed5ng PHP2Shell. Ch\u00fac qu\u00fd kh\u00e1ch th\u00e0nh c\u00f4ng!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP2Shell l\u00e0 t\u00ean g\u1ecdi c\u1ee7a hai l\u1ed7 h\u1ed5ng nghi\u00eam tr\u1ecdng trong PHP, m\u00e3 \u0111\u1ecbnh danh CVE-2026-109618 v\u00e0 CVE-2026-109619. Netgate x\u00e1c nh\u1eadn c\u00e1c l\u1ed7 h\u1ed5ng n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn pfSense do h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng PHP cho giao di\u1ec7n qu\u1ea3n tr\u1ecb WebGUI v\u00e0 d\u1ecbch v\u1ee5 Captive Portal. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng tin v\u00e0 h\u01b0\u1edbng d\u1eabn ki\u1ec3m [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_oasis_is_in_workflow":0,"_oasis_original":0,"footnotes":""},"categories":[4,16],"tags":[458,38,187,479],"class_list":["post-9866","post","type-post","status-publish","format-standard","hentry","category-linux","category-longvan-servers","tag-cve","tag-firewall","tag-pfsense","tag-php2shell"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>H\u01b0\u1edbng d\u1eabn c\u1eadp nh\u1eadt pfSense x\u1eed l\u00fd l\u1ed7 h\u1ed5ng PHP2Shell - Long V\u00e2n<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longvan.net\/cong-dong\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u01b0\u1edbng d\u1eabn c\u1eadp nh\u1eadt pfSense x\u1eed l\u00fd l\u1ed7 h\u1ed5ng PHP2Shell - Long V\u00e2n\" \/>\n<meta property=\"og:description\" content=\"PHP2Shell l\u00e0 t\u00ean g\u1ecdi c\u1ee7a hai l\u1ed7 h\u1ed5ng nghi\u00eam tr\u1ecdng trong PHP, m\u00e3 \u0111\u1ecbnh danh CVE-2026-109618 v\u00e0 CVE-2026-109619. Netgate x\u00e1c nh\u1eadn c\u00e1c l\u1ed7 h\u1ed5ng n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn pfSense do h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng PHP cho giao di\u1ec7n qu\u1ea3n tr\u1ecb WebGUI v\u00e0 d\u1ecbch v\u1ee5 Captive Portal. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng tin v\u00e0 h\u01b0\u1edbng d\u1eabn ki\u1ec3m [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longvan.net\/cong-dong\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\/\" \/>\n<meta property=\"og:site_name\" content=\"Long V\u00e2n\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-25T09:45:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-26T12:22:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/10\/Screenshot_1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1317\" \/>\n\t<meta property=\"og:image:height\" content=\"178\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n B\u00ecnh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n B\u00ecnh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\\\/\"},\"author\":{\"name\":\"Nguy\u1ec5n B\u00ecnh\",\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/#\\\/schema\\\/person\\\/0724e5bcec71b61fb8f56fff94ba2fc3\"},\"headline\":\"H\u01b0\u1edbng d\u1eabn c\u1eadp nh\u1eadt pfSense x\u1eed l\u00fd l\u1ed7 h\u1ed5ng PHP2Shell\",\"datePublished\":\"2026-10-25T09:45:22+00:00\",\"dateModified\":\"2026-10-26T12:22:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\\\/\"},\"wordCount\":1645,\"publisher\":{\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/Screenshot_1.png\",\"keywords\":[\"CVE\",\"firewall\",\"pfsense\",\"php2shell\"],\"articleSection\":[\"Linux\",\"Servers\"],\"inLanguage\":\"vi\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\\\/\",\"url\":\"https:\\\/\\\/longvan.net\\\/cong-dong\\\/huong-dan-cap-nhat-pfsense-xu-ly-lo-hong-php2shell\\\/\",\"name\":\"H\u01b0\u1edbng d\u1eabn c\u1eadp nh\u1eadt pfSense x\u1eed l\u00fd l\u1ed7 h\u1ed5ng PHP2Shell - 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