CVE-2023-6992 - Memory corruption issues is Cloudflare zlib implementation

Back Back to CVE browser

MEDIUM

Memory corruption issues is Cloudflare zlib implementation

Published Jan 4, 2024

5.5

MEDIUM

CVSS 3.1

EPSS 0.24%

Description

Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow. A local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software. Patches: The issue has been patched in commit 8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected.

Affected products

Vendor Cloudflare Product Zlib Default
unaffected
- Version
  0
  Status
  affected
  Constraints
  <8352d10

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Cloudflare

Zlib

unaffected

Version	Status	Constraints
0	affected	<8352d10

Remediation

No remediation recorded yet.

Weaknesses (4)

CWE-122

CWE-126

CWE-20

Improper Input Validation

CWE-787

Out-of-bounds Write

References (3)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-59184
Advisory
https://github.com/cloudflare/zlib
product
https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh
vendor-advisoryPatchThird Party Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-59184		Advisory
https://github.com/cloudflare/zlib		product
https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh		vendor-advisoryPatchThird Party Advisory