CVE-2020-27783
Published: 3 December 2020
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.
Priority
Medium
CVSS 3 base score: 6.1
Status
| Package | Release | Status |
|---|---|---|
|
lxml Launchpad, Ubuntu, Debian |
bionic |
Released
(4.2.1-1ubuntu0.3)
|
| focal |
Released
(4.5.0-1ubuntu0.2)
|
|
| groovy |
Released
(4.5.2-1ubuntu0.3)
|
|
| precise |
Released
(2.3.2-1ubuntu0.5)
|
|
| trusty |
Released
(3.3.3-1ubuntu0.2+esm2)
|
|
| upstream |
Released
(4.6.2-1)
|
|
| xenial |
Released
(3.5.0-1ubuntu0.3)
|
Notes
| Author | Note |
|---|---|
| sbeattie | according to lxml upstream, first commit does not fix completely, second commit is needed/fixes issue better. |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27783
- https://github.com/lxml/lxml/commit/89e7aad6e7ff9ecd88678ff25f885988b184b26e (lxml-4.6.1)
- https://ubuntu.com/security/notices/USN-4666-1
- https://ubuntu.com/security/notices/USN-4666-2
- NVD
- Launchpad
- Debian