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Ubuntu Security Notice USN-6629-2
February 14, 2024
ujson vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
UltraJSON could be made to crash if it received specially crafted
input.
Software Description:
- 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 LTS:
   python3-ujson                   1.35-4ubuntu0.1
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6629-2
   https://ubuntu.com/security/notices/USN-6629-1
   CVE-2021-45958
Package Information:
   https://launchpad.net/ubuntu/+source/ujson/1.35-4ubuntu0.1