Comment 0 for bug 1957929

CVE-2021-43527: nss: Memory corruption in decodeECorDsaSignature with DSA signatures (and RSA-PSS)

Score:
CVSSv2: 7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)

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.

References:
http://nvd.nist.gov/vuln/detail/CVE-2021-43527
https://access.redhat.com/errata/RHSA-2021:4904
https://access.redhat.com/security/cve/CVE-2021-43527
https://lists.centos.org/pipermail/centos-announce/2021-December/060972.html

Required package version:
nss-3.67.0-4.el7_9.x86_64.rpm
nss-devel-3.67.0-4.el7_9.x86_64.rpm
nss-pkcs11-devel-3.67.0-4.el7_9.x86_64.rpm
nss-sysinit-3.67.0-4.el7_9.x86_64.rpm'

Packages:
nss

Found during January 2022 CVE Scan