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Debian LTS Advisory DLA-2929-1                [email protected]
https://www.debian.org/lts/security/                         Anton Gladky
February 26, 2022                             https://wiki.debian.org/LTS
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Package        : ujson
Version        : 1.35-1+deb9u1
CVE ID         : CVE-2021-45958

One issue have been discovered in ujson: ultra fast JSON encoder and decoder for Python.


    Stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode) has
    been detected. Exploitation can, for example, use a large amount of indentation.

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

We recommend that you upgrade your ujson packages.

For the detailed security status of ujson 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