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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 signa...
CVE-2021-43527 · published 4 years ago
Summary
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 ...
What to do
- Update mozilla nss to version 3.73 or later.
- Update mozilla nss_esr to version 3.68.1 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | nss |
< 3.73 cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:* |
| mozilla | nss_esr |
< 3.68.1 cpe:2.3:a:mozilla:nss_esr:*:*:*:*:*:*:*:* |
| netapp | cloud_backup |
All versions
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* |
| netapp | e-series_santricity_os_controller |
>= 11.0, <= 11.70.1 cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* |
| oracle | communications_cloud_native_core_binding_support_function |
1.11.0 cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:* |
| oracle | communications_cloud_native_core_network_repository_function |
1.15.0 1.15.1 cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:* |
| oracle | communications_cloud_native_core_network_slice_selection_function |
1.8.0 cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:* |
| oracle | communications_policy_management |
12.6.0.0.0 cpe:2.3:a:oracle:communications_policy_management:12.6.0.0.0:*:*:*:*:*:*:* |
| starwindsoftware | starwind_san_\&_nas |
v8r13 cpe:2.3:a:starwindsoftware:starwind_san_\&_nas:v8r13:*:*:*:*:*:*:* |
| starwindsoftware | starwind_virtual_san |
v8r13 cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8r13:14398:*:*:*:*:*:* |
Original advisory text
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 signa...
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.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1737470 Issue Tracking Permissions Required Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf Third Party Advisory
- https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/ Vendor Advisory
- https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/ Vendor Advisory
- https://security.gentoo.org/glsa/202212-05 Third 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.html Patch Third Party Advisory
- https://www.starwindsoftware.com/security/sw-20220802-0001/ Third Party Advisory
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker full control (estimated)
Type
CWE-787Out-of-bounds Write
Timeline
Published8 Dec 2021
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2021-43527 · NVD
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