CVE-2022-40896: Malicious File Upload
First published: Wed Jul 19 2023(Updated: )
A ReDoS issue was discovered in `pygments/lexers/smithy.py` in Pygments until 2.15.0 via SmithyLexer.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Pygments Pygments | <=2.15.0 | |
| pip/Pygments | <2.15.0 | 2.15.0 |
| debian/pygments | <=2.7.1+dfsg-2.1<=2.14.0+dfsg-1 | 2.18.0+dfsg-1 |
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Reference Links
- https://pypi.org/project/Pygments/
- https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages-part-2/
- https://github.com/pygments/pygments/blob/master/pygments/lexers/smithy.py#L61
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2253941
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2259081
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2259082
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2259080
- https://access.redhat.com/errata/RHSA-2024:1057
- https://access.redhat.com/errata/RHSA-2024:1072
- https://access.redhat.com/errata/RHSA-2024:2010
- https://bugzilla.redhat.com/show_bug.cgi?id=2251643
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZGMXALE3HSP4OXC7UUWIKX3OXKZDTY3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZO4BQCIY2S2KZYHERQMKURB7AHXDBO/
- https://nvd.nist.gov/vuln/detail/CVE-2022-40896
- https://github.com/pygments/pygments/commit/97eb3d5ec7c1b3ea4fcf9dee30a2309cf92bd194
- https://github.com/pygments/pygments/commit/dd52102c38ebe78cd57748e09f38929fd283ad04
- https://github.com/pygments/pygments/commit/fdf182a7af85b1deeeb637ca970d31935e7c9d52
- https://github.com/pypa/advisory-database/tree/main/vulns/pygments/PYSEC-2023-117.yaml
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZGMXALE3HSP4OXC7UUWIKX3OXKZDTY3
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZO4BQCIY2S2KZYHERQMKURB7AHXDBO
- https://pypi.org/project/Pygments
- https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages-part-2
- https://github.com/advisories/GHSA-mrwq-x4v8-fh7p (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40896
- https://launchpad.net/bugs/cve/CVE-2022-40896
- https://security-tracker.debian.org/tracker/CVE-2022-40896
- https://ubuntu.com/security/CVE-2022-40896
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VUZO4BQCIY2S2KZYHERQMKURB7AHXDBO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZGMXALE3HSP4OXC7UUWIKX3OXKZDTY3/
- https://github.com/pygments/pygments/issues/2356
- https://github.com/pygments/pygments/issues/2355
Frequently Asked Questions
What is the severity of CVE-2022-40896?
The severity of CVE-2022-40896 is medium with a CVSS score of 5.5.
Which software versions are affected by CVE-2022-40896?
Pygments versions up to and including 2.15.0 are affected by CVE-2022-40896.
What is the vulnerability description of CVE-2022-40896?
CVE-2022-40896 is a ReDoS (Regular Expression Denial of Service) vulnerability discovered in the `pygments/lexers/smithy.py` file in Pygments, impacting versions until 2.15.0 via the SmithyLexer.
How can I mitigate CVE-2022-40896?
To mitigate CVE-2022-40896, it is recommended to update Pygments to version 2.15.0.
Where can I find more information about CVE-2022-40896?
You can find more information about CVE-2022-40896 on the following references: [Link 1](https://pypi.org/project/Pygments/), [Link 2](https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages-part-2/), [Link 3](https://github.com/pygments/pygments/blob/master/pygments/lexers/smithy.py#L61).
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