CVE-2015-8557
critical
CVSS v3
9.0
CVSS v4 NEW
—
VIR risk
9.0
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.
Predictions
Exploit likelihood
93%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Ubuntu Affected 4 releases
| Version | Status | Fixed in |
|---|---|---|
| 15.10 | Affected | — |
| 15.04 | Affected | — |
| 14.04 | Affected | — |
| 12.04 | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.0.1+dfsg-2 |
| sid | Fixed | 2.0.1+dfsg-2 |
| forky | Fixed | 2.0.1+dfsg-2 |
| bullseye | Fixed | 2.0.1+dfsg-2 |
| bookworm | Fixed | 2.0.1+dfsg-2 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | pygments | >=1.2.2,<2.1 | 2.1 |
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
- https://nvd.nist.gov/vuln/detail/CVE-2015-8557
- https://github.com/pygments/pygments/commit/db6dd826f8624179e563aaded391efe824462f51
- https://github.com/advisories/GHSA-fff8-4w9p-7v76
- https://github.com/pygments/pygments
- https://github.com/pypa/advisory-database/tree/main/vulns/pygments/PYSEC-2016-32.yaml
- https://security-tracker.debian.org/tracker/CVE-2015-8557
CWEs
CWE-78
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.