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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0516
                         firejail security update
                             12 February 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           firejail
Publisher:         Debian
Operating System:  Debian GNU/Linux
Impact/Access:     Root Compromise      -- Existing Account
                   Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-26910  

Reference:         ESB-2021.0463

Original Bulletin: 
   https://www.debian.org/lts/security/2021/dla-2554

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Debian LTS Advisory DLA-2554-1              debian-lts@lists.debian.org
https://www.debian.org/lts/security/                      Utkarsh Gupta
February 11, 2021                           https://wiki.debian.org/LTS
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Package        : firejail
Version        : 0.9.44.8-2+deb9u2
CVE ID         : CVE-2021-26910

Roman Fiedler discovered a vulnerability in the OverlayFS code in
firejail, a sandbox program to restrict the running environment of
untrusted applications, which could result in root privilege
escalation. This update disables OverlayFS support in firejail.

For Debian 9 stretch, this problem has been fixed in version
0.9.44.8-2+deb9u2.

We recommend that you upgrade your firejail packages.

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

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
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===========================================================================
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===========================================================================
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