Ubuntu.comUB:CVE-2020-35475CVE-2020-35475
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
56.6%
In MediaWiki before 1.35.1, the messages userrights-expiry-current and
userrights-expiry-none can contain raw HTML. XSS can happen when a user
visits Special:UserRights but does not have rights to change all
userrights, and the table on the left side has unchangeable groups in it.
(The right column with the changeable groups is not affected and is escaped
correctly.)
References
launchpad.net/bugs/cve/CVE-2020-35475
lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
lists.wikimedia.org/pipermail/wikitech-l/2020-December/094126.html
nvd.nist.gov/vuln/detail/CVE-2020-35475
phabricator.wikimedia.org/T268917
security-tracker.debian.org/tracker/CVE-2020-35475
www.cve.org/CVERecord?id=CVE-2020-35475
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
56.6%