CVEvulnerability

CVE-2023-6992

5.5 MEDIUM Published 2024-01-04 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2024-01-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.0 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-122, CWE-126, CWE-20, CWE-787

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 configurations

• cloudflare zlib (< 2023-11-16)

Related

Weakness · CWE (4)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-126 Buffer Over-read weakness
  • CWE-20 Improper Input Validation weakness
  • CWE-787 Out-of-bounds Write weakness

References