Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2022.6103
libarchive security update
23 November 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: libarchive
Publisher: Debian
Operating System: Debian GNU/Linux
Resolution: Patch/Upgrade
CVE Names: CVE-2021-31566 CVE-2021-23177 CVE-2019-19221
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html
Comment: CVSS (Max): 7.8 CVE-2021-31566 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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Debian LTS Advisory DLA-3202-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Sylvain Beucler
November 22, 2022 https://wiki.debian.org/LTS
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Package : libarchive
Version : 3.3.3-4+deb10u2
CVE ID : CVE-2019-19221 CVE-2021-23177 CVE-2021-31566
Debian Bug : 945287 1001986 1001990
Three issues have been found in libarchive, a multi-format archive and
compression library.
CVE-2019-19221
out-of-bounds read because of an incorrect mbrtowc or mbtowc call
CVE-2021-23177
extracting a symlink with ACLs modifies ACLs of target
CVE-2021-31566
symbolic links incorrectly followed when changing modes, times,
ACL and flags of a file while extracting an archive
For Debian 10 buster, these problems have been fixed in version
3.3.3-4+deb10u2.
We recommend that you upgrade your libarchive packages.
For the detailed security status of libarchive please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libarchive
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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