Buffer overflow in yaml-cpp - CVE-2017-5950

Vulnerability identifier: #VU39294

CSH Severity: Medium

CVSS v4: 6.9 [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]

CVE-ID: CVE-2017-5950

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The SingleDocParser::HandleNode function in yaml-cpp (aka LibYaml-C++) 0.5.3 allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.

yaml-cpp
Fedora
yaml-cpp
fawkes
librime
calamares
mongodb
pdns
IBM Security Verify Access

Install update from vendor's website.

yaml-cpp - addressed in versions 0.6.1-4.fc27, 0.6.1-4.fc28, 0.6.1-4.fc29
fawkes - update to 1.0.1-9.fc27.1
librime - update to 1.2-18.fc27.1
calamares - update to 3.1.8-2.fc27.1
mongodb - update to 3.4.11-4.fc27
pdns - update to 4.1.4-1.fc27.1
IBM Security Verify Access - update to 10.0.7.0

• http://www.securityfocus.com/bid/97307
• https://github.com/jbeder/yaml-cpp/issues/459

• Buffer overflow in yaml-cpp
• Multiple vulnerabilities in IBM Security Verify Access
• Fedora 27 update for yaml-cpp
• Fedora 29 update for yaml-cpp
• Fedora 28 update for yaml-cpp
• Fedora 27 update for calamares, fawkes, librime, mongodb, pdns