CVE-2015-8557: OS Command Injection
First published: Fri Jan 08 2016(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/Pygments | >=1.2.2<2.1 | 2.1 |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =15.04 | |
| Ubuntu Linux | =15.10 | |
| Pygments Pygments | =1.2.2 | |
| Pygments Pygments | =1.3 | |
| Pygments Pygments | =1.3.1 | |
| Pygments Pygments | =1.4 | |
| Pygments Pygments | =1.5 | |
| Pygments Pygments | =1.6 | |
| Pygments Pygments | =1.6-rc1 | |
| Pygments Pygments | =2.0 | |
| Pygments Pygments | =2.0-rc1 | |
| Pygments Pygments | =2.0.1 |
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Reference Links
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2015-8557
- https://github.com/advisories/GHSA-fff8-4w9p-7v76 (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/pygments/PYSEC-2016-32.yaml
- https://github.com/pygments/pygments/commit/db6dd826f8624179e563aaded391efe824462f51
Frequently Asked Questions
What is the severity of CVE-2015-8557?
CVE-2015-8557 has a medium severity level due to the potential for remote code execution through shell metacharacters in font names.
How do I fix CVE-2015-8557?
To fix CVE-2015-8557, upgrade Pygments to version 2.1 or later.
Which versions of Pygments are affected by CVE-2015-8557?
CVE-2015-8557 affects Pygments versions 1.2.2 to 2.0.2.
What types of attacks can exploit CVE-2015-8557?
CVE-2015-8557 can be exploited through remote attacks that inject arbitrary commands into font names.
What platforms are impacted by CVE-2015-8557?
CVE-2015-8557 impacts systems running vulnerable versions of Pygments, particularly on Ubuntu 12.04, 14.04, 15.04, and 15.10.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
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- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-fff8-4w9p-7v76
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- collector/nvd-cve
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- package-manager/pip
- vendor/canonical
- canonical/ubuntu linux
- version/ubuntu linux/12.04
- version/ubuntu linux/14.04
- version/ubuntu linux/15.04
- version/ubuntu linux/15.10
- vendor/pygments
- canonical/pygments pygments
- version/pygments pygments/1.2.2
- version/pygments pygments/1.3
- version/pygments pygments/1.3.1
- version/pygments pygments/1.4
- version/pygments pygments/1.5
- version/pygments pygments/1.6
- version/pygments pygments/1.6-rc1
- version/pygments pygments/2.0
- version/pygments pygments/2.0-rc1
- version/pygments pygments/2.0.1