[Secure-testing-team] Bug#859891: yaml-cpp: CVE-2017-5950

[Salvatore Bonaccorso]

Source: yaml-cpp
Version: 0.5.1-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/jbeder/yaml-cpp/issues/459
Control: clone -1 -2
Control: reassign -2 src:yaml-cpp0.3
Control: found -2 0.3.0-1.1
Control: retitle -2 yaml-cpp0.3: CVE-2017-5950

Hi,

the following vulnerability was published for yaml-cpp.

CVE-2017-5950[0]:
| 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.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

The issue is easily reproducible with the payload provided in the
upstream report, using the parser in util/parse.cpp and reduce the
stack size for easier reprodibility.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-5950
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5950

Regards,
Salvatore