CVE-2015-8557 Command Injection in Pygments

What is CVE-2015-8557?

CVE-2015-8557 is a critical command injection vulnerability in Canonical Ubuntu Linux, published on 8 Jan 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-78

Which versions are affected by CVE-2015-8557?

3 open source packages ship an affected version, including pygments and Pygments. It affects 2 products.

Products include Canonical Ubuntu Linux, Pygments Pygments.

How do I fix CVE-2015-8557?

Upgrade pygments to 2.1 or later.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2015-8557 being exploited?

There is no known exploitation of CVE-2015-8557 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-8557, DLA-369-1, DSA-3445-1, GHSA-fff8-4w9p-7v76, MGASA-2015-0478, PYSEC-2016-32 and 2 more.