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Ubuntu: USN-4476-1 (CVE-2020-12403): NSS vulnerability

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Ubuntu: USN-4476-1 (CVE-2020-12403): NSS vulnerability

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
08/27/2020
Created
09/01/2020
Added
08/28/2020
Modified
11/15/2024

Description

A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability.

Solution(s)

  • ubuntu-pro-upgrade-libnss3

References

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