U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.


Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


NIST has updated the NVD program announcement page with additional information regarding recent concerns and the temporary delays in enrichment efforts.

CVE-2022-37434 Detail


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 3.x Severity and Metrics:

Base Score:  9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://seclists.org/fulldisclosure/2022/Oct/37 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2022/Oct/38 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2022/Oct/41 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2022/Oct/42 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/08/05/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/08/09/1 Mailing List  Patch  Third Party Advisory 
https://github.com/curl/curl/issues/9271 Exploit  Issue Tracking  Third Party Advisory 
https://github.com/ivd38/zlib_overflow Exploit  Third Party Advisory 
https://github.com/madler/zlib/blob/21767c654d31d2dccdde4330529775c6c5fd5389/zlib.h#L1062-L1063 Exploit  Third Party Advisory 
https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1 Patch  Third Party Advisory 
https://github.com/nodejs/node/blob/75b68c6e4db515f76df73af476eccf382bbcb00a/deps/zlib/inflate.c#L762-L764 Exploit  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/09/msg00012.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWN4VE3JQR4O2SOUS5TXNLANRPMHWV4I/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMBOJ77A7T7PQCARMDUK75TE6LLESZ3O/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAVPQNCG3XRLCLNSQRM3KAN5ZFMVXVTY/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5U7OTKZSHY2I3ZFJSR2SHFHW72RKGDK/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YRQAI7H4M4RQZ2IWZUEEXECBE5D56BH2/ Mailing List  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220901-0005/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20230427-0007/ Third Party Advisory 
https://support.apple.com/kb/HT213488 Third Party Advisory 
https://support.apple.com/kb/HT213489 Third Party Advisory 
https://support.apple.com/kb/HT213490 Third Party Advisory 
https://support.apple.com/kb/HT213491 Third Party Advisory 
https://support.apple.com/kb/HT213493 Third Party Advisory 
https://support.apple.com/kb/HT213494 Third Party Advisory 
https://www.debian.org/security/2022/dsa-5218 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

20 change records found show changes

Quick Info

CVE Dictionary Entry:
NVD Published Date:
NVD Last Modified: