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Ubuntu: (Multiple Advisories) (CVE-2021-43527): NSS regression

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Ubuntu: (Multiple Advisories) (CVE-2021-43527): NSS regression

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
12/01/2021
Created
03/25/2022
Added
12/02/2021
Modified
03/24/2022

Description

NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS \#7, or PKCS \#12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.

Solution(s)

  • ubuntu-upgrade-libnss3
  • ubuntu-upgrade-thunderbird

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