{"id":"CVE-2021-43527","state":"PUBLISHED","title":"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 f","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.","publishedAt":"2021-12-08T00:00:00.000Z","updatedAt":"2024-08-04T03:55:29.297Z","severity":null,"assigner":"mozilla","products":["Mozilla NSS"],"affected":[{"vendor":"Mozilla","product":"NSS","versions":[{"version":"unspecified","status":"affected","lessThan":"3.73","versionType":"custom"},{"version":"unspecified","status":"affected","lessThan":"3.68.1","versionType":"custom"}]}],"references":["https://www.mozilla.org/security/advisories/mfsa2021-51/","https://bugzilla.mozilla.org/show_bug.cgi?id=1737470","https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/","https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/","https://www.oracle.com/security-alerts/cpuapr2022.html","https://security.netapp.com/advisory/ntap-20211229-0002/","https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf","https://www.starwindsoftware.com/security/sw-20220802-0001/","https://security.gentoo.org/glsa/202212-05"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:07.642Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/43xxx/CVE-2021-43527.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-43527","state":"PUBLISHED","datePublished":"2021-12-08T00:00:00.000Z","dateUpdated":"2024-08-04T03:55:29.297Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2021-11-08T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Mozilla","product":"NSS","versions":[{"version":"unspecified","status":"affected","lessThan":"3.73","versionType":"custom"},{"version":"unspecified","status":"affected","lessThan":"3.68.1","versionType":"custom"}]}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-51/"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1737470"},{"url":"https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/"},{"url":"https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"url":"https://security.netapp.com/advisory/ntap-20211229-0002/"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf"},{"url":"https://www.starwindsoftware.com/security/sw-20220802-0001/"},{"url":"https://security.gentoo.org/glsa/202212-05","name":"GLSA-202212-05","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"Memory corruption via DER-encoded DSA and RSA-PSS signatures"}]}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2022-12-19T00:00:00.000Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-51/","tags":["x_transferred"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1737470","tags":["x_transferred"]},{"url":"https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/","tags":["x_transferred"]},{"url":"https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/","tags":["x_transferred"]},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20211229-0002/","tags":["x_transferred"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf","tags":["x_transferred"]},{"url":"https://www.starwindsoftware.com/security/sw-20220802-0001/","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/202212-05","name":"GLSA-202212-05","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T03:55:29.297Z"}}]}}}