Vulnerability identifier: #VU55306

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-36277

CWE-ID: CWE-670

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Leptonica
Universal components / Libraries / Libraries used by multiple products

Vendor: DanBloomberg

Description

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

The vulnerability exists due to an incorrect left shift in pixConvert2To8 in pixconv.c. A remote attacker can cause a denial of service condition on the target system. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Leptonica: 1.0 - 1.79.0

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External links
http://github.com/DanBloomberg/leptonica/compare/1.79.0...1.80.0
http://github.com/DanBloomberg/leptonica/pull/499
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997
http://lists.debian.org/debian-lts-announce/2021/03/msg00037.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.