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Debian LTS Advisory DLA-3664-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                      Markus Koschany
November 24, 2023                             https://wiki.debian.org/LTS
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Package        : symfony
Version        : 3.4.22+dfsg-2+deb10u3
CVE ID         : CVE-2023-46734
Debian Bug     : 1055774

Pierre Rudloff discovered a potential XSS vulnerability in Symfony, a PHP
framework. Some Twig filters in CodeExtension use `is_safe=html` but do not
actually ensure their input is safe. Symfony now escapes the output of the
affected filters.

For Debian 10 buster, this problem has been fixed in version
3.4.22+dfsg-2+deb10u3.

We recommend that you upgrade your symfony packages.

For the detailed security status of symfony please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/symfony

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

Debian LTS: DLA-3664-1: symfony security update

November 24, 2023
Pierre Rudloff discovered a potential XSS vulnerability in Symfony, a PHP framework

Summary


Pierre Rudloff discovered a potential XSS vulnerability in Symfony, a PHP
framework. Some Twig filters in CodeExtension use `is_safe=html` but do not
actually ensure their input is safe. Symfony now escapes the output of the
affected filters.

For Debian 10 buster, this problem has been fixed in version
3.4.22+dfsg-2+deb10u3.

We recommend that you upgrade your symfony packages.

For the detailed security status of symfony please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/symfony

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
Package : symfony
Version : 3.4.22+dfsg-2+deb10u3
CVE ID : CVE-2023-46734
Debian Bug : 1055774

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