CVE-2020-27783 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1901633 https://www.debian.org/security/2020/dsa-4810 https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/ https://advisory.checkmarx.net/advisory/CX-2020-4286 https://security.netapp.com/advisory/ntap-20210521-0003/ https://www.oracle.com//security-alerts/cpujul2021.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1