CVE-2021-43527
Last modified
CVE-2021-43527 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 17.56% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mozilla | Nss | < 3.73 | — |
| Mozilla | Nss Esr | < 3.68.1 | — |
| Netapp | Cloud Backup | All versions | — |
| Netapp | E-Series Santricity Os Controller | >= 11.0, <= 11.70.1 | — |
| Oracle | Communications Cloud Native Core Binding Support Function | 1.11.0 | — |
| Oracle | Communications Cloud Native Core Network Repository Function | 1.15.0 | — |
| Oracle | Communications Cloud Native Core Network Repository Function | 1.15.1 | — |
| Oracle | Communications Cloud Native Core Network Slice Selection Function | 1.8.0 | — |
| Oracle | Communications Policy Management | 12.6.0.0.0 | — |
| Starwindsoftware | Starwind San \& Nas | v8r13 | — |
| Starwindsoftware | Starwind Virtual San | v8r13 | 14398 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1737470Issue Tracking, Permissions Required, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdfThird Party Advisory
- https://security.gentoo.org/glsa/202212-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211229-0002/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-51/Vendor Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.starwindsoftware.com/security/sw-20220802-0001/Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1737470Issue Tracking, Permissions Required, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdfThird Party Advisory
- https://security.gentoo.org/glsa/202212-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211229-0002/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-51/Vendor Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.starwindsoftware.com/security/sw-20220802-0001/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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