CVE-2022-37434

CRITICAL

Published Aug 5, 20223y ago · Modified Jun 17, 20262w ago

9.8 CVSS 3.1

Critical

Published Aug 5, 2022 3y ago

Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score

9.8

Exploitability

3.9

Impact

5.9

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

Public Exploit Known

Patch Available

Weaknesses 2

CWE-120

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 31

Vendor	Product	Version	Range
zlib	zlib	*	≤1.2.12
fedoraproject	fedora	35	any
fedoraproject	fedora	36	any
fedoraproject	fedora	37	any
debian	debian_linux	10.0	any
netapp	active_iq_unified_manager	*	any
netapp	active_iq_unified_manager	*	any
netapp	hci	*	any
netapp	management_services_for_element_software	*	any
netapp	oncommand_workflow_automation	*	any
netapp	ontap_select_deploy_administration_utility	*	any
netapp	storagegrid	*	any
netapp	hci_compute_node	*	any
netapp	h300s_firmware	*	any
netapp	h300s	*	any
netapp	h500s_firmware	*	any
netapp	h500s	*	any
netapp	h700s_firmware	*	any
netapp	h700s	*	any
netapp	h700s_firmware	*	any
netapp	h700s	*	any
apple	ipados	*	<15.7.1
apple	iphone_os	*	<15.7.1
apple	iphone_os	*	≥16.0 – <16.1
apple	macos	*	≥11.0 – <11.7.1
apple	macos	*	≥12.0.0 – <12.6.1
apple	watchos	*	<9.1
stormshield	stormshield_network_security	*	≥3.7.31 – <3.7.34
stormshield	stormshield_network_security	*	≥3.11.0 – <3.11.22
stormshield	stormshield_network_security	*	≥4.3.0 – <4.3.16
stormshield	stormshield_network_security	*	≥4.6.0 – <4.6.3

References 27

seclists.org http://seclists.org/fulldisclosure/2022/Oct/37

Mailing ListThird Party Advisory
seclists.org http://seclists.org/fulldisclosure/2022/Oct/38

Mailing ListThird Party Advisory
seclists.org http://seclists.org/fulldisclosure/2022/Oct/41

Mailing ListThird Party Advisory
seclists.org http://seclists.org/fulldisclosure/2022/Oct/42

Mailing ListThird Party Advisory
openwall.com http://www.openwall.com/lists/oss-security/2022/08/05/2

Mailing ListThird Party Advisory
openwall.com http://www.openwall.com/lists/oss-security/2022/08/09/1

Mailing ListPatchThird Party Advisory
github.com https://github.com/curl/curl/issues/9271

ExploitIssue TrackingThird Party Advisory
github.com https://github.com/ivd38/zlib_overflow

ExploitThird Party Advisory
github.com https://github.com/madler/zlib/blob/21767c654d31d2dccdde4330529775c6c5fd5389/zlib.h#L1062-L1063

ExploitThird Party Advisory
github.com https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d
github.com https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1

PatchThird Party Advisory
github.com https://github.com/nodejs/node/blob/75b68c6e4db515f76df73af476eccf382bbcb00a/deps/zlib/inflate.c#L762-L764

ExploitThird Party Advisory
lists.debian.org https://lists.debian.org/debian-lts-announce/2022/09/msg00012.html

Mailing ListThird Party Advisory
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWN4VE3JQR4O2SOUS5TXNLANRPMHWV4I/

Mailing ListThird Party Advisory
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMBOJ77A7T7PQCARMDUK75TE6LLESZ3O/

Mailing ListThird Party Advisory
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAVPQNCG3XRLCLNSQRM3KAN5ZFMVXVTY/

Mailing ListThird Party Advisory
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5U7OTKZSHY2I3ZFJSR2SHFHW72RKGDK/

Mailing ListThird Party Advisory
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YRQAI7H4M4RQZ2IWZUEEXECBE5D56BH2/

Mailing ListThird Party Advisory
security.netapp.com https://security.netapp.com/advisory/ntap-20220901-0005/

Third Party Advisory
security.netapp.com https://security.netapp.com/advisory/ntap-20230427-0007/

Third Party Advisory
support.apple.com https://support.apple.com/kb/HT213488

Third Party Advisory
support.apple.com https://support.apple.com/kb/HT213489

Third Party Advisory
support.apple.com https://support.apple.com/kb/HT213490

Third Party Advisory
support.apple.com https://support.apple.com/kb/HT213491

Third Party Advisory
support.apple.com https://support.apple.com/kb/HT213493

Third Party Advisory
support.apple.com https://support.apple.com/kb/HT213494

Third Party Advisory
debian.org https://www.debian.org/security/2022/dsa-5218

Third Party Advisory

Remediation

openwall.com http://www.openwall.com/lists/oss-security/2022/08/09/1

Mailing ListPatchThird Party Advisory
github.com https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1

PatchThird Party Advisory