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Security Bulletin: Heap-Based Buffer Overflow in Mozilla Network Security Services (NSS) may affect IBM Spectrum Protect Plus (CVE-2021-43527)

Security Bulletin


Mozilla Network Security Services is vulnerable to a heap-based buffer overflow which may affect IBM Spectrum Protect Plus.

Vulnerability Details

CVEID:   CVE-2021-43527
DESCRIPTION:   Mozilla Network Security Services (NSS), as used in Mozilla Firefox is vulnerable to a heap-based buffer overflow, caused by improper bounds checking when handling DER-encoded DSA or RSA-PSS signatures. By sending an overly long signature, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Spectrum Protect Plus10.1.0.0-


BM Spectrum Protect Plus Affected VersionsFixing
PlatformLink to Fix and Instructions


Workarounds and Mitigations


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Change History

17 May 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSNQFQ","label":"IBM Spectrum Protect Plus"},"Component":"","Platform":[{"code":"PF016","label":"Linux"}],"Version":"10.1","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
17 May 2022