CVE-2022-25309

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-09-06 · updated 2026-06-17
Weakness: CWE-122

Description

A heap-based buffer overflow flaw was found in the Fribidi package and affects the fribidi_cap_rtl_to_unicode() function of the fribidi-char-sets-cap-rtl.c file. This flaw allows an attacker to pass a specially crafted file to the Fribidi application with the '--caprtl' option, leading to a crash and causing a denial of service.

Affected products

GNU Fribidi: before 1.0.12 — fixed in 1.0.12
Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: GNU Fribidi 1.0.12. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2022-25309
https://bugzilla.redhat.com/show_bug.cgi?id=2047896
https://github.com/fribidi/fribidi/commit/f22593b82b5d1668d1997dbccd10a9c31ffea3b3
https://github.com/fribidi/fribidi/issues/182
https://access.redhat.com/security/cve/CVE-2022-25309
https://bugzilla.redhat.com/show_bug.cgi?id=2047896
https://github.com/fribidi/fribidi/commit/f22593b82b5d1668d1997dbccd10a9c31ffea3b3
https://github.com/fribidi/fribidi/issues/182

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