The FontManager._get_nix_font_path function in formatters/img.py in Pygments 1.2.2 through 2.0.2 allows remote attackers to execute arbitrary commands via shell metacharacters in a font name.
References
- https://nvd.nist.gov/vuln/detail/CVE-2015-8557
- https://bitbucket.org/birkenfeld/pygments-main/pull-requests/501/fix-shell-injection-in/diff
- https://security.gentoo.org/glsa/201612-05
- http://packetstormsecurity.com/files/133823/Pygments-FontManager._get_nix_font_path-Shell-Injection.html
- http://seclists.org/fulldisclosure/2015/Oct/4
- http://www.debian.org/security/2016/dsa-3445
- http://www.openwall.com/lists/oss-security/2015/12/14/17
- http://www.openwall.com/lists/oss-security/2015/12/14/6
- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
- http://www.ubuntu.com/usn/USN-2862-1
- https://github.com/advisories/GHSA-fff8-4w9p-7v76