CVE-2023-24021

Published: 20 January 2023

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.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
modsecurity-apache Launchpad, Ubuntu, Debian	bionic	Released (2.9.2-1ubuntu0.1~esm1) Available with Ubuntu Pro
	focal	Released (2.9.3-1ubuntu0.1)
	jammy	Released (2.9.5-1ubuntu0.1~esm1) Available with Ubuntu Pro
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Not vulnerable (2.9.7-1)
	mantic	Not vulnerable (2.9.7-1)
	trusty	Not vulnerable (code not present)
	upstream	Released (2.9.7-1)
	xenial	Released (2.9.0-1ubuntu0.1~esm1) Available with Ubuntu Pro

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Bugs

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1029329

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