Multiple vulnerabilities in MediaWiki

1) Input validation error

EUVDB-ID: #VU43599

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-4885

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The wikitext parser in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allows remote attackers to cause a denial of service (infinite loop) via certain input, as demonstrated by the padleft function.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.17 - 1.18.1

CPE2.3

External links

https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
https://secunia.com/advisories/48504
https://www.openwall.com/lists/oss-security/2012/03/22/9
https://www.openwall.com/lists/oss-security/2012/03/24/1
https://www.securityfocus.com/bid/52689
https://bugzilla.wikimedia.org/show_bug.cgi?id=22555
https://bugzilla.wikimedia.org/show_bug.cgi?id=35315

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) Cross-site request forgery

EUVDB-ID: #VU43600

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1579

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.17 - 1.18.1

CPE2.3

External links

https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
https://secunia.com/advisories/48504
https://www.openwall.com/lists/oss-security/2012/03/22/9
https://www.openwall.com/lists/oss-security/2012/03/24/1
https://www.securityfocus.com/bid/52689
https://bugzilla.wikimedia.org/show_bug.cgi?id=34907

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 request forgery

EUVDB-ID: #VU43601

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1580

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.17 - 1.18.1

CPE2.3

External links

https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
https://osvdb.org/80364
https://secunia.com/advisories/48504
https://www.openwall.com/lists/oss-security/2012/03/22/9
https://www.openwall.com/lists/oss-security/2012/03/24/1
https://www.securityfocus.com/bid/52689
https://bugzilla.wikimedia.org/show_bug.cgi?id=35317
https://exchange.xforce.ibmcloud.com/vulnerabilities/74286

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.

4) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU43602

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1581

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 uses weak random numbers for password reset tokens, which makes it easier for remote attackers to change the passwords of arbitrary users.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.17 - 1.18.1

CPE2.3

External links

https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
https://secunia.com/advisories/48504
https://www.openwall.com/lists/oss-security/2012/03/22/9
https://www.openwall.com/lists/oss-security/2012/03/24/1
https://www.securityfocus.com/bid/52689
https://bugzilla.wikimedia.org/show_bug.cgi?id=35078
https://exchange.xforce.ibmcloud.com/vulnerabilities/78910

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.

5) Cross-site scripting

EUVDB-ID: #VU43603

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-1582

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

Exploit availability: No

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in the wikitext parser in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security 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 update from vendor's website.

Vulnerable software versions

MediaWiki: 1.17 - 1.18.1

CPE2.3

External links

https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
https://osvdb.org/80363
https://secunia.com/advisories/48504
https://www.openwall.com/lists/oss-security/2012/03/22/9
https://www.openwall.com/lists/oss-security/2012/03/24/1
https://www.securityfocus.com/bid/52689
https://bugzilla.wikimedia.org/show_bug.cgi?id=35315
https://exchange.xforce.ibmcloud.com/vulnerabilities/74288

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.

6) Cross-site request forgery

EUVDB-ID: #VU43605

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1578

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.17 - 1.18.1

CPE2.3

External links

https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
https://osvdb.org/80361
https://secunia.com/advisories/48504
https://www.openwall.com/lists/oss-security/2012/03/22/9
https://www.openwall.com/lists/oss-security/2012/03/24/1
https://www.securityfocus.com/bid/52689
https://bugzilla.wikimedia.org/show_bug.cgi?id=34212
https://exchange.xforce.ibmcloud.com/vulnerabilities/78911

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.

Risk	Medium
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2012-4885 CVE-2012-1579 CVE-2012-1580 CVE-2012-1581 CVE-2012-1582 CVE-2012-1578
CWE-ID	CWE-20 CWE-352 CWE-264 CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	MediaWiki Web applications / CMS
Vendor	MediaWiki.org