CVE-2020-28493
Vulnerability from cvelistv5
Published
2021-02-01 19:30
Modified
2024-09-16 17:24
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P
Summary
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
report@snyk.iohttps://github.com/pallets/jinja/blob/ab81fd9c277900c85da0c322a2ff9d68a235b2e6/src/jinja2/utils.py%23L20Broken Link
report@snyk.iohttps://github.com/pallets/jinja/pull/1343Patch, Third Party Advisory
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVAKCOO7VBVUBM3Q6CBBTPBFNP5NDXF4/
report@snyk.iohttps://security.gentoo.org/glsa/202107-19Third Party Advisory
report@snyk.iohttps://snyk.io/vuln/SNYK-PYTHON-JINJA2-1012994Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/pallets/jinja/blob/ab81fd9c277900c85da0c322a2ff9d68a235b2e6/src/jinja2/utils.py%23L20Broken Link
af854a3a-2127-422b-91ae-364da2661108https://github.com/pallets/jinja/pull/1343Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVAKCOO7VBVUBM3Q6CBBTPBFNP5NDXF4/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202107-19Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-PYTHON-JINJA2-1012994Exploit, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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