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CVE-2021-3345

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

7.8

Related Resources (9)

Url: https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html

Url: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08

Url: https://gnupg.org

Url: https://www.oracle.com//security-alerts/cpujul2021.html

Url: https://bugs.gentoo.org/show_bug.cgi?id=767814

Url: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-3345

Url: https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html

Url: https://www.mend.io/vulnerability-database/CVE-2021-3345

Severity Score

7.8

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	7.8
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:	7.2
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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