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.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2021-51/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1737470 | issue tracking permissions required vendor advisory |
| https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/ | vendor advisory |
| https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/ | vendor advisory |
| https://www.oracle.com/security-alerts/cpuapr2022.html | third party advisory patch |
| https://security.netapp.com/advisory/ntap-20211229-0002/ | third party advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf | third party advisory |
| https://www.starwindsoftware.com/security/sw-20220802-0001/ | third party advisory |
| https://security.gentoo.org/glsa/202212-05 | third party advisory vendor advisory |