CVE-2023-6992

Summary

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 Software

VendorProductVersion RangeStatus
Cloudflarezlib0 < 8352d10affected

Weaknesses

  • CWE-20: CWE-20 Improper Input Validation
  • CWE-122: CWE-122: Heap-based Buffer Overflow
  • CWE-126: CWE-126: Buffer Over-read

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References