What is CVE-2018-20574?

CVE-2018-20574 is a medium-severity vulnerability in Yaml-Cpp Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2018-12-28.

How severe is CVE-2018-20574?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2018-20574 known to be exploited?

7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Yaml-Cpp Project

CVE-2018-20574

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.

Vulnerability class: Buffer Overflow

EPSS: 0.025 (83.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Yaml-cpp_project Yaml-cpp — versions 0.6.2
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2018-20574?: CVE-2018-20574 is a medium-severity vulnerability in Yaml-Cpp Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2018-12-28.
How severe is CVE-2018-20574?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2018-20574 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.