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Debian LTS Advisory DLA-2987-1                [email protected]
https://www.debian.org/lts/security/                    Thorsten Alteholz
April 30, 2022                                https://wiki.debian.org/LTS
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Package        : libarchive
Version        : 3.2.2-2+deb9u3
CVE ID         : CVE-2019-19221 CVE-2021-23177 CVE-2021-31566

Three issues have been found in libarchive, a multi-format archive and 
compression library.

      symbolic links incorrectly followed when changing modes, times, ACL
      and flags of a file while extracting an archive

      extracting a symlink with ACLs modifies ACLs of target

      out-of-bounds read because of an incorrect mbrtowc or mbtowc call

For Debian 9 stretch, these problems have been fixed in version

We recommend that you upgrade your libarchive packages.

For the detailed security status of libarchive please refer to
its security tracker page at:

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