CVE-2021-3345 Information

Description

_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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08 https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html https://gnupg.org https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html https://bugs.gentoo.org/show_bug.cgi?id=767814 https://www.oracle.com//security-alerts/cpujul2021.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8