MGASA-2021-0038 - Updated python-lxml packages fix a security vulnerability

Publication date: 17 Jan 2021
URL: https://advisories.mageia.org/MGASA-2021-0038.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2020-27783

A XSS vulnerability was discovered in python-lxml's clean module. The module's
parser didn't properly imitate browsers, which caused different behaviorsbetween the sanitizer and the user's page. A remote attacker could exploit
this flaw to run arbitrary HTML/JS code. (CVE-2020-27783).

References:
- https://bugs.mageia.org/show_bug.cgi?id=27685
- https://www.debian.org/lts/security/2020/dla-2467
- https://ubuntu.com/security/notices/USN-4666-1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27783

SRPMS:
- 7/core/python-lxml-4.3.0-1.2.mga7

Mageia 2021-0038: python-lxml security update

A XSS vulnerability was discovered in python-lxml's clean module

Summary

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviorsbetween the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code. (CVE-2020-27783).

References

- https://bugs.mageia.org/show_bug.cgi?id=27685

- https://www.debian.org/lts/security/2020/dla-2467

- https://ubuntu.com/security/notices/USN-4666-1

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27783

Resolution

MGASA-2021-0038 - Updated python-lxml packages fix a security vulnerability

SRPMS

- 7/core/python-lxml-4.3.0-1.2.mga7

Severity
Publication date: 17 Jan 2021
URL: https://advisories.mageia.org/MGASA-2021-0038.html
Type: security
CVE: CVE-2020-27783

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