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CVE-2023-6992

medium CVSS 4.0 EPSS 0.2%

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.

Versions it affects

Software versions checked with the free lookup that CVE-2023-6992 applies to, and the release that fixes it where the sources name one.

zlib 1.2.11 fixed in 2023-11-16

At a glance

Severity
Medium
CVSS base score
4.0 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.2% probability of exploitation in the next 30 days, higher than 13% of scored vulnerabilities
Weakness
CWE-122
Published
2024-01-04
NVD CVE.org

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