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Debian LTS Advisory DLA-3731-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                         Colin Watson
February 01, 2024                             https://wiki.debian.org/LTS
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Package        : man-db
Version        : 2.8.5-2+deb10u1
CVE ID         :
Debian Bug     : 926450 948238 1061870

man-db provides the "man" command used for reading manual pages.

man-db 2.7.6.1-3 added AppArmor confinement for filter programs called
by man, and man-db 2.8.0 added a seccomp sandbox to confine subprocesses
that handle untrusted data.  These hardening measures caused various
problems that have been fixed in more recent releases: the AppArmor
confinement broke the ability to save compressed cat pages under
/var/cache/man/, while the seccomp sandbox broke Hardened Malloc as well
as systems using mksh-derived shells.

For Debian 10 buster, these problems have been fixed in version
2.8.5-2+deb10u1.

We recommend that you upgrade your man-db packages.

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

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-3731-1: man-db: fix sandboxing issues

February 1, 2024
man-db provides the "man" command used for reading manual pages

Summary

man-db 2.7.6.1-3 added AppArmor confinement for filter programs called
by man, and man-db 2.8.0 added a seccomp sandbox to confine subprocesses
that handle untrusted data. These hardening measures caused various
problems that have been fixed in more recent releases: the AppArmor
confinement broke the ability to save compressed cat pages under
/var/cache/man/, while the seccomp sandbox broke Hardened Malloc as well
as systems using mksh-derived shells.

For Debian 10 buster, these problems have been fixed in version
2.8.5-2+deb10u1.

We recommend that you upgrade your man-db packages.

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

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 : man-db
Version : 2.8.5-2+deb10u1
CVE ID :
Debian Bug : 926450 948238 1061870

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