CVE-2021-27291

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-27291
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27291.json
Aliases
Related
Published
2021-03-17T13:15:15Z
Modified
2024-05-14T08:32:54.712484Z
Summary
[none]
Details

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.

References

Affected packages

Alpine:v3.11 / py3-pygments

Package

Name
py3-pygments

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0The exact introduced commit is unknown
Fixed
2.5.2-r1

Affected versions

1.*

1.3.1-r0
1.3.1-r1
1.4-r0
1.4-r1
1.4-r2
1.5-r0
1.6-r0

2.*

2.0.2-r0
2.0.2-r1
2.0.2-r2
2.0.2-r3
2.1.3-r0
2.1.3-r1
2.1.3-r2
2.1.3-r3
2.2.0-r0
2.2.0-r1
2.4.0-r0
2.4.2-r0
2.4.2-r1
2.4.2-r2
2.5.1-r2

Alpine:v3.12 / py3-pygments

Package

Name
py3-pygments

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0The exact introduced commit is unknown
Fixed
2.6.1-r1

Affected versions

1.*

1.3.1-r0
1.3.1-r1
1.4-r0
1.4-r1
1.4-r2
1.5-r0
1.6-r0

2.*

2.0.2-r0
2.0.2-r1
2.0.2-r2
2.0.2-r3
2.1.3-r0
2.1.3-r1
2.1.3-r2
2.1.3-r3
2.2.0-r0
2.2.0-r1
2.4.0-r0
2.4.2-r0
2.4.2-r1
2.4.2-r2
2.5.1-r0
2.5.2-r0
2.5.2-r1

Git / github.com/pygments/pygments

Affected ranges

Type
GIT
Repo
https://github.com/pygments/pygments
Events
Introduced
f534f990331df660f5a5ea6947943e184672ac51
Fixed
2e7e8c4a7b318f4032493773732754e418279a14

Affected versions

1.*

1.1
1.1.1
1.2
1.2.1
1.2.2
1.3
1.3.1
1.4
1.5
1.6
1.6rc1

2.*

2.0
2.0.1
2.0.2
2.0rc1
2.1
2.1.1
2.1.2
2.1.3
2.2.0
2.3.0
2.3.1
2.4.0
2.4.1
2.4.2
2.5.0
2.5.1
2.5.2
2.6.0
2.6.1
2.7.0
2.7.1
2.7.2
2.7.3