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Vulnerability · Published Jan 20, 2023 · Assigned by mitre

CVE-2023-24021

High 7.5

In plain English

A high-severity security flaw in the modsecurity-apache package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 39.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12modsecurity-apache2.9.7-1DEBIAN-CVE-2023-24021
Debian:13modsecurity-apache2.9.7-1DEBIAN-CVE-2023-24021
Debian:14modsecurity-apache2.9.7-1DEBIAN-CVE-2023-24021

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-170 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References