CVE-2022-37434
CRITICAL 9.8EPSS 19.0%
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 18.97% chance of exploitation in the next 30 days, 97th percentile
- Published
- 2022-08-05
- Updated
- 2026-10-14
Proof-of-concept exploits (3)
- ivd38/zlib_overflow
- Trinadh465/external_zlib_CVE-2022-374340★ · 2024-02-02
- xen0bit/CVE-2022-37434_poc3★ · 2022-10-15
Security advisories
- http://seclists.org/fulldisclosure/2022/Oct/37
- http://seclists.org/fulldisclosure/2022/Oct/38
- http://seclists.org/fulldisclosure/2022/Oct/41
- http://seclists.org/fulldisclosure/2022/Oct/42
- http://www.openwall.com/lists/oss-security/2022/08/05/2
- http://www.openwall.com/lists/oss-security/2022/08/09/1
- curl/curl/issues/9271
- madler/zlib/blob/21767c654d31d2dccdde4330529775c6c5fd5389/zlib.h#L1062-L1063
- nodejs/node/blob/75b68c6e4db515f76df73af476eccf382bbcb00a/deps/zlib/inflate.c#L762-L764
- https://lists.debian.org/debian-lts-announce/2022/09/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://security.netapp.com/advisory/ntap-20220901-0005
- https://security.netapp.com/advisory/ntap-20230427-0007
- https://support.apple.com/kb/HT213488
- https://support.apple.com/kb/HT213489
- https://support.apple.com/kb/HT213490
- https://support.apple.com/kb/HT213491
- https://support.apple.com/kb/HT213493
- https://support.apple.com/kb/HT213494
- https://www.debian.org/security/2022/dsa-5218