What’s Vulnerable › Vulnerabilities
CVE-2020-36277
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-03-11 · updated 2026-06-17
- Weakness: CWE-670
Description
Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.
Affected products
- Debian Linux: 9.0
- Fedoraproject Fedora: 32, 33
- Leptonica: before 1.80.0 — fixed in 1.80.0
How to fix
Upgrade to a fixed version: Leptonica 1.80.0. Check the vendor advisory for mitigations.
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997
- https://github.com/DanBloomberg/leptonica/compare/1.79.0...1.80.0
- https://github.com/DanBloomberg/leptonica/pull/499
- https://lists.debian.org/debian-lts-announce/2021/03/msg00037.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW/
- https://security.gentoo.org/glsa/202107-53
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997
- https://github.com/DanBloomberg/leptonica/compare/1.79.0...1.80.0
- https://github.com/DanBloomberg/leptonica/pull/499
- https://lists.debian.org/debian-lts-announce/2021/03/msg00037.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
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