USN-6629-2: UltraJSON vulnerability

Releases

• Ubuntu 20.04 LTS

Packages

• ujson - ultra fast JSON encoder and decoder for Python 3

Details

USN-6629-1 fixed vulnerabilities in UltraJSON.
This update provides the corresponding updates for Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that UltraJSON incorrectly handled certain input with
a large amount of indentation. An attacker could possibly use this issue
to crash the program, resulting in a denial of service. (CVE-2021-45958)

Jake Miller discovered that UltraJSON incorrectly decoded certain
characters. An attacker could possibly use this issue to cause key
confusion and overwrite values in dictionaries. (CVE-2022-31116)

It was discovered that UltraJSON incorrectly handled an error when
reallocating a buffer for string decoding. An attacker could possibly
use this issue to corrupt memory. (CVE-2022-31117)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04

• python3-ujson - 1.35-4ubuntu0.1

In general, a standard system update will make all the necessary changes.

References

• CVE-2021-45958

Related notices

• USN-6629-1: python3-ujson, python-ujson, ujson