CVE-2021-43527

 

Published at: - 08-12-2021 11:15

Last modified: - 25-10-2022 06:22

Total changes: - 10

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://www.mozilla.org/security/advisories/mfsa2021-51/
• 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://bugzilla.mozilla.org/show_bug.cgi?id=1737470
• https://security.netapp.com/advisory/ntap-20211229-0002/
• https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://www.starwindsoftware.com/security/sw-20220802-0001/

 

Keywords

NVD

 

CVE-2021-43527

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures