vulnerability
Arch Linux: Arbitrary code execution (CVE-2021-3345)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Jan 29, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Jan 29, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
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. Just decrypting some data can overflow a heap buffer with attacker controlled data, no verification or signature is validated before the vulnerability occurs. The issue is fixed in version 1.9.1.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-3345
- https://attackerkb.com/topics/CVE-2021-3345
- 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://gnupg.org
- URL-https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html
- URL-https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html
- URL-https://security.archlinux.org/ASA-202101-45
- URL-https://www.oracle.com//security-alerts/cpujul2021.html
- CWE-787
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