PT-2018-15443 · Yaml Cpp+3 · Yaml-Cpp+3

E4Ck · Published 2018-12-28 · Updated 2025-11-03 · CVE-2018-20573

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions yaml-cpp version 0.6.2

Description The issue allows remote attackers to cause a denial of service, resulting in stack consumption and application crash, via a crafted YAML file. This is due to a problem in the Scanner::EnsureTokensInQueue function.

Recommendations For yaml-cpp version 0.6.2, consider avoiding the use of the Scanner::EnsureTokensInQueue function until a patch is available. As a temporary workaround, restrict the processing of crafted YAML files to minimize the risk of exploitation.

Exploit

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2020-1758

AZL-7006

BDU:2025-12508

CVE-2018-20573

OPENSUSE-SU-2022:1073-1

OPENSUSE-SU-2022_1073-1

SUSE-SU-2022:1072-1

SUSE-SU-2022:1073-1

SUSE-SU-2022:1073-2

SUSE-SU-2022_1073-1

SUSE-SU-2023:1740-3

SUSE-SU-2023_1740-3

Affected Products

Alt Linux

Astra Linux

Suse

Yaml-Cpp

References · 33

• 🔥 https://github.com/jbeder/yaml-cpp/issues/655 · Exploit
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2025-1020SE47 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20573 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:1072-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-12508 · Security Note
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2025-0923SE17 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20573 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2023:1740-3 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-7006 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-20573 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20573 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:1073-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:1073-2 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20573 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20573 · Vendor Advisory