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Multiple vulnerabilities in MediaWiki



Published: 2020-04-03
Severity Low
Patch available YES
Number of vulnerabilities 3
CVE ID CVE-2020-10960
CWE ID CWE-79
CWE-601
Exploitation vector Network
Public exploit N/A
Vulnerable software
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MediaWiki
Web applications / CMS

Vendor MediaWiki.org

Security Advisory

1) Cross-site scripting

Severity: Low

CVSSv3: 4.1 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: N/A

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in UserGroupMembership::getLink(). A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.31.0, 1.31.1, 1.31.2, 1.31.3, 1.31.4, 1.31.5, 1.31.6, 1.33.0, 1.33.1, 1.33.2, 1.34.0

CPE External links

https://phabricator.wikimedia.org//r/p/mediawiki/core;browse/REL1_34/RELEASE-NOTES-1.34
https://phabricator.wikimedia.org//r/p/mediawiki/core;browse/REL1_33/RELEASE-NOTES-1.33
https://phabricator.wikimedia.org//r/p/mediawiki/core;browse/REL1_31/RELEASE-NOTES-1.31

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Open redirect

Severity: Low

CVSSv3: 3.2 [CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data, related to logout URL. A remote attacker can redirect the victim to an arbitrary domain via the logout button.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.34.0

CPE External links

https://github.com/wikimedia/mediawiki/releases/tag/1.34.1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Cross-site scripting

Severity: Low

CVSSv3: 4.1 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-10960

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data, related to jquery.makeCollapsible and CSS selector. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.31.0, 1.31.1, 1.31.2, 1.31.3, 1.31.4, 1.31.5, 1.31.6, 1.33.0, 1.33.1, 1.33.2, 1.34.0

CPE External links

https://phabricator.wikimedia.org//r/p/mediawiki/core;browse/REL1_34/RELEASE-NOTES-1.34
https://phabricator.wikimedia.org//r/p/mediawiki/core;browse/REL1_33/RELEASE-NOTES-1.33
https://phabricator.wikimedia.org//r/p/mediawiki/core;browse/REL1_31/RELEASE-NOTES-1.31

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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