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CVE-2021-3345

Good to know:

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Date: January 29, 2021

_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.

Language: C

Severity Score

Related Resources (9)

https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08
https://gnupg.org
https://www.oracle.com//security-alerts/cpujul2021.html
https://bugs.gentoo.org/show_bug.cgi?id=767814
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
https://nvd.nist.gov/vuln/detail/CVE-2021-3345
https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html
https://www.mend.io/vulnerability-database/CVE-2021-3345

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

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Upgrade Version

Upgrade to version libgcrypt-1.9.1

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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