Vulnerability in Mozilla Nss
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…
EPSS: 0.052 (90.2th percentile) — read the EPSS interpretation.
Affected products
- Mozilla Nss — versions unspecified
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2021-51/
- bugzilla.mozilla.org/show_bug.cgi
- ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/
- ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/
- www.oracle.com/security-alerts/cpuapr2022.html
- security.netapp.com/advisory/ntap-20211229-0002/
- cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf
- www.starwindsoftware.com/security/sw-20220802-0001/
- GLSA-202212-05 (vendor-advisory)
Frequently asked questions
- What is CVE-2021-43527?
- CVE-2021-43527 is a vulnerability in Mozilla Nss. Published 2021-12-08.
- Is CVE-2021-43527 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.