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Debian LTS Advisory DLA-2636-1                [email protected]
https://www.debian.org/lts/security/                    Thorsten Alteholz
April 23, 2021                                https://wiki.debian.org/LTS
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Package        : pjproject
Version        : 2.5.5~dfsg-6+deb9u2
CVE ID         : CVE-2021-21375

An issue has been found in pjproject, a set of libraries for the PJ 
Due to bad handling of two consecutive crafted answers to an INVITE, the 
attacker is able to crash the server resulting in a denial of service.

For Debian 9 stretch, this problem has been fixed in version

We recommend that you upgrade your pjproject packages.

For the detailed security status of pjproject 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