Division by zero in Leptonica - CVE-2022-38266

Vulnerability identifier: #VU84721

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-38266

CWE-ID: CWE-369

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide by zero error within the blocksumLow() function in convolve.c. A remote attacker can pass a specially crafted JPEG image to the application and crash it.

Leptonica
Gentoo Linux
openEuler
leptonica
leptonica-tools
leptonica-debugsource
leptonica-debuginfo
leptonica-devel
media-libs/leptonica

Install updates from vendor's website.

Leptonica - update to 1.81.0
leptonica - update to 1.79.0-3
leptonica-tools - update to 1.79.0-3
leptonica-debugsource - update to 1.79.0-3
leptonica-debuginfo - update to 1.79.0-3
leptonica-devel - update to 1.79.0-3
media-libs/leptonica - update to 1.81.0

• https://github.com/tesseract-ocr/tesseract/issues/3498
• https://github.com/DanBloomberg/leptonica/commit/f062b42c0ea8dddebdc6a152fd16152de215d614
• https://lists.debian.org/debian-lts-announce/2022/12/msg00018.html
• https://security.gentoo.org/glsa/202312-01

• Denial of service in Leptonica
• Gentoo update for Leptonica
• openEuler update for leptonica