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

https://notcve.org/view.php?id=CVE-2021-43527

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. • https://bugzilla.mozilla.org/show_bug.cgi?id=1737470 https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM https://security.gentoo.org/glsa/202212-05 https://security.netapp.com/advisory/ntap-20211229-0002 https://www.mozilla.org/security/advisories/mfsa2021-51 https://www.oracle.com/security-alerts/cpuapr2022.html https://www.starwindsoftw • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •