CVE-2021-27291
Published: 17 March 2021
In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.
Priority
Medium
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
eric Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Needed
|
|
| jammy |
Needed
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
pygments Launchpad, Ubuntu, Debian |
bionic |
Released
(2.2.0+dfsg-1ubuntu0.2)
|
| focal |
Released
(2.3.1+dfsg-1ubuntu2.2)
|
|
| groovy |
Released
(2.3.1+dfsg-4ubuntu0.2)
|
|
| hirsute |
Released
(2.7.1+dfsg-2ubuntu1)
|
|
| impish |
Released
(2.7.1+dfsg-2ubuntu1)
|
|
| jammy |
Released
(2.7.1+dfsg-2ubuntu1)
|
|
| precise |
Ignored
(end of ESM support, was needed)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(2.7.4)
|
|
| xenial |
Released
(2.1+dfsg-1ubuntu0.2)
|
Notes
| Author | Note |
|---|---|
| avital | eric looks to contain a vendored copy of pygments |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27291
- https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce
- https://ubuntu.com/security/notices/USN-4897-1
- NVD
- Launchpad
- Debian