#VU36263 Buffer overflow in yaml-cpp - CVE-2018-20574

Vulnerability identifier: #VU36263

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-20574

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
yaml-cpp
Other software / Other software solutions

Vendor: jbeder (Jesse Beder)

Description

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

The SingleDocParser::HandleFlowMap function in yaml-cpp (aka LibYaml-C++) 0.6.2 allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.

Mitigation
Install update from vendor's website.

Vulnerable software versions

yaml-cpp: 0.6.2

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External links
https://github.com/jbeder/yaml-cpp/issues/654

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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.