Vulnerability Details : 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, 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.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-43527
- cpe:2.3:a:oracle:communications_policy_management:12.6.0.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:nss_esr:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- Netapp » E-series Santricity Os ControllerVersions from including (>=) 11.0 and up to, including, (<=) 11.70.1cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
- cpe:2.3:a:starwindsoftware:starwind_san_\&_nas:v8r13:*:*:*:*:*:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8r13:14398:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43527
5.40%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43527
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-43527
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43527
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1737470
Access DeniedIssue Tracking;Permissions Required;Vendor Advisory
-
https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf
Third Party Advisory
-
https://www.oracle.com/security-alerts/cpuapr2022.html
Oracle Critical Patch Update Advisory - April 2022Patch;Third Party Advisory
-
https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/
Directory Listing: /pub/security/nss/releases/NSS_3_73_RTM/Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20211229-0002/
CVE-2021-43527 Libnss Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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https://www.mozilla.org/security/advisories/mfsa2021-51/
Memory corruption in NSS via DER-encoded DSA and RSA-PSS signatures — MozillaVendor Advisory
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https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/
Directory Listing: /pub/security/nss/releases/NSS_3_68_1_RTM/Vendor Advisory
-
https://security.gentoo.org/glsa/202212-05
Mozilla Network Security Service (NSS): Multiple Vulnerabilities (GLSA 202212-05) — Gentoo securityThird Party Advisory
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https://www.starwindsoftware.com/security/sw-20220802-0001/
CVE-2021-43527 NSS heap overflow in StarWind productsThird Party Advisory
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