#VU50150 Heap-based buffer overflow in Libgcrypt - CVE-2021-3345

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Main Vulnerability Database Vulnerabilities #VU50150

#VU50150 Heap-based buffer overflow in Libgcrypt - CVE-2021-3345

Published: January 29, 2021 / Updated: July 5, 2024


Vulnerability identifier: #VU50150
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2021-3345
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
Libgcrypt
Software vendor:
GNU

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the _gcry_md_block_write(0 function in cipher/hash-common.c in Libgcrypt. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install updates from vendor's website.

External links