Medium severity · published Dec 3, 2020
CVE-2020-27783
A XSS vulnerability was discovered in python-lxml's clean module
6.1
CVSS
4%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)4.0% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Communications Offline Mediation Controller · Oracle
12.0.0.3.0 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
FE
Fedora · Fedoraproject
32; 33 · source: NVD
LX
Lxml · Lxml
1.2 before 4.6.2 · source: NVD
SN
Snapcenter · Netapp
All versions, or not specified · source: NVD
SC
Software Collections · Redhat
All versions, or not specified · source: NVD
ZS
Zfs Storage Appliance Kit · Oracle
8.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27783
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27783
Exploit
https://advisory.checkmarx.net/advisory/CX-2020-4286
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=1901633
Mailing List
https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210521-0003/
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