CVE-2020-28493

This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the _punctuation_re regex operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.

References

Affected packages

Git / github.com/pallets/jinja

Affected ranges

Type: GIT
Repo: https://github.com/pallets/jinja
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

cf215390d4a4d6f0a4de27e2687eed176878f13d

Affected versions

2.*

2.0

2.0rc1

2.1

2.1.1

2.10

2.10.1

2.10.2

2.10.3

2.11.0

2.11.1

2.11.2

2.2

2.2.1

2.3

2.3.1

2.4

2.4.1

2.5

2.5.1

2.5.3

2.5.4

2.5.5

2.6

2.7

2.7.1

2.7.2

2.7.3

2.8

2.8.1

2.9

2.9.1

2.9.2

2.9.3

2.9.4

2.9.5

2.9.6