CVE-2015-8557

Severity: critical (CVSS 9.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-01-08 · updated 2026-06-17
Weakness: CWE-78

Description

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.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.04, 15.10
Pygments: 1.2.2, 1.3, 1.3.1, 1.4, 1.5, 1.6 (+4)

References

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://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

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