- Vulnerability/
- USN-4885-1
USN-4885-1: Pygments vulnerability
First published: Mon Mar 22 2021(Updated: )
It was discovered that Pygments incorrectly handled parsing SML files. If a user or automated system were tricked into parsing a specially crafted SML file, a remote attacker could cause Pygments to hang, resulting in a denial of service.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/python3-pygments | <2.3.1+dfsg-4ubuntu0.1 | 2.3.1+dfsg-4ubuntu0.1 |
| Ubuntu Ubuntu | =20.10 | |
| All of | ||
| ubuntu/python-pygments | <2.3.1+dfsg-1ubuntu2.1 | 2.3.1+dfsg-1ubuntu2.1 |
| Ubuntu Ubuntu | =20.04 | |
| All of | ||
| ubuntu/python3-pygments | <2.3.1+dfsg-1ubuntu2.1 | 2.3.1+dfsg-1ubuntu2.1 |
| Ubuntu Ubuntu | =20.04 | |
| All of | ||
| ubuntu/python-pygments | <2.2.0+dfsg-1ubuntu0.1 | 2.2.0+dfsg-1ubuntu0.1 |
| Ubuntu Ubuntu | =18.04 | |
| All of | ||
| ubuntu/python3-pygments | <2.2.0+dfsg-1ubuntu0.1 | 2.2.0+dfsg-1ubuntu0.1 |
| Ubuntu Ubuntu | =18.04 | |
| All of | ||
| ubuntu/python-pygments | <2.1+dfsg-1ubuntu0.1 | 2.1+dfsg-1ubuntu0.1 |
| Ubuntu Ubuntu | =16.04 | |
| All of | ||
| ubuntu/python3-pygments | <2.1+dfsg-1ubuntu0.1 | 2.1+dfsg-1ubuntu0.1 |
| Ubuntu Ubuntu | =16.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2021-20270
- https://ubuntu.com/security/notices/USN-4897-2
- https://launchpad.net/ubuntu/+source/pygments/2.3.1+dfsg-4ubuntu0.1
- https://launchpad.net/ubuntu/+source/pygments/2.3.1+dfsg-1ubuntu2.1
- https://launchpad.net/ubuntu/+source/pygments/2.2.0+dfsg-1ubuntu0.1
- https://launchpad.net/ubuntu/+source/pygments/2.1+dfsg-1ubuntu0.1
- https://ubuntu.com/security/notices/USN-4885-1 (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this Pygments vulnerability?
The vulnerability ID for this Pygments vulnerability is USN-4885-1.
How does Pygments handle parsing SML files?
Pygments incorrectly handles parsing SML files.
What is the impact of this vulnerability?
If a user or automated system parses a specially crafted SML file, a remote attacker could cause Pygments to hang, resulting in a denial of service.
Which versions of Python-Pygments and Python3-Pygments are affected by this vulnerability?
The following versions of Python-Pygments and Python3-Pygments are affected: 2.3.1+dfsg-4ubuntu0.1, 2.3.1+dfsg-1ubuntu2.1, 2.2.0+dfsg-1ubuntu0.1, 2.1+dfsg-1ubuntu0.1.
How can I fix this Pygments vulnerability?
To fix this Pygments vulnerability, update Python-Pygments and Python3-Pygments to the specified remedy versions provided by Ubuntu.
- collector/usn
- anchor-related/USN-4897-2
- agent/references
- agent/severity
- agent/title
- agent/type
- agent/event
- agent/description
- agent/first-publish-date
- agent/softwarecombine
- agent/last-modified-date
- agent/tags
- agent/trending
- package-manager/ubuntu
- vendor/ubuntu
- canonical/ubuntu ubuntu
- version/ubuntu ubuntu/20.10
- version/ubuntu ubuntu/20.04
- version/ubuntu ubuntu/18.04
- version/ubuntu ubuntu/16.04