Mozilla Nss vulnerabilities

6 CVEs affecting Mozilla Nss, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-4421, published 2023-12-12.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2009-3555, published 2009-11-09. Critical severity, CVSS 9.8. EPSS: 87.3% chance of exploitation in the next 30 days. The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before…
CVE-2021-43527, published 2021-12-08. Critical severity, CVSS 9.8. EPSS: 17.6% chance of exploitation in the next 30 days. 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…
CVE-2016-1938, published 2016-01-31. Medium severity, CVSS 6.5. EPSS: 3.2% chance of exploitation in the next 30 days. The s_mp_div function in lib/freebl/mpi/mpi.c in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, improperly divides numbers, which might make it easier…
CVE-2016-5285, published 2019-11-15. High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days. A Null pointer dereference vulnerability exists in Mozilla Network Security Services due to a missing NULL check in PK11_SignWithSymKey / ssl3_ComputeRecordMACConstantTime, which could let a remote…
CVE-2020-12403, published 2021-05-27. Critical severity, CVSS 9.1. EPSS: 1.5% chance of exploitation in the next 30 days. A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly…
CVE-2023-4421, published 2023-12-12. Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days. The NSS code used for checking PKCS#1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks. Both the overall correctness of the padding as well as the length of the encrypted…