CVE-2023-6992

Memory corruption issues is Cloudflare zlib implementation

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.

Categories

4.0
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory github.com
Affected: Cloudflare zlib
Published at:
Updated at:

References

Link Tags
https://github.com/cloudflare/zlib product
https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh patch vendor advisory third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-6992?
CVE-2023-6992 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6992?
To fix CVE-2023-6992, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-6992 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-6992 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6992?
CVE-2023-6992 affects Cloudflare zlib.
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