CVE-2023-24021

Description

Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.15%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.7 release notes
https://github.com/SpiderLabs/ModSecurity/pull/2857 issue tracking patch
https://github.com/SpiderLabs/ModSecurity/pull/2857/commits/4324f0ac59f8225aa44bc5034df60dbeccd1d334 patch
https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCH6JM4I4MD4YABYFHSBDDOUFDGIFJKL/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52TGCZCOHYBDCVWJYNN2PS4QLOHCXWTQ/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYRTXTOQQI6SB2TLI5QXU76DURSLS4XI/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-24021?
CVE-2023-24021 has been scored as a high severity vulnerability.
How to fix CVE-2023-24021?
To fix CVE-2023-24021, 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-2023-24021 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-24021 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.
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