Vulnerability Description
A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lxml | Lxml | >= 1.2, < 4.6.2 |
| Redhat | Software Collections | - |
| Redhat | Enterprise Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 32 |
| Netapp | Snapcenter | - |
| Oracle | Communications Offline Mediation Controller | 12.0.0.3.0 |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
Related Weaknesses (CWE)
References
- https://advisory.checkmarx.net/advisory/CX-2020-4286ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1901633ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2020/12/msg00028.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20210521-0003/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4810Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatchThird Party Advisory
- https://advisory.checkmarx.net/advisory/CX-2020-4286ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1901633ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2020/12/msg00028.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20210521-0003/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4810Third Party Advisory
FAQ
What is CVE-2020-27783?
CVE-2020-27783 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A re...
How severe is CVE-2020-27783?
CVE-2020-27783 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27783?
Check the references section above for vendor advisories and patch information. Affected products include: Lxml Lxml, Redhat Software Collections, Redhat Enterprise Linux, Debian Debian Linux, Fedoraproject Fedora.