Heap-based buffer overflow in Zlib - CVE-2022-37434
Published: August 7, 2022 / Updated: October 23, 2023
Vulnerability identifier: #VU66153
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2022-37434
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: GNU
Affected software:
Zlib
Zlib
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing a large gzip header within inflateGetHeader in inflate.c. A remote attacker can pass a specially crafted file to the affected application, trigger heap-based buffer overflow and execute arbitrary code on the target system.
How to mitigate CVE-2022-37434
Install update from vendor's website.
Sources
- https://github.com/nodejs/node/blob/75b68c6e4db515f76df73af476eccf382bbcb00a/deps/zlib/inflate.c#L762-L764
- https://github.com/ivd38/zlib_overflow
- https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1
- https://github.com/madler/zlib/blob/21767c654d31d2dccdde4330529775c6c5fd5389/zlib.h#L1062-L1063
- http://www.openwall.com/lists/oss-security/2022/08/05/2