Multiple vulnerabilities in WordPress

1) Input validation error

EUVDB-ID: #VU42745

Risk: Medium

CVSSv3.1: 6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2013-0235

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

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

The XMLRPC API in WordPress before 3.5.1 allows remote attackers to send HTTP requests to intranet servers, and conduct port-scanning attacks, by specifying a crafted source URL for a pingback, related to a Server-Side Request Forgery (SSRF) issue. Per: http://cwe.mitre.org/data/definitions/918.html 'CWE-918: Server-Side Request Forgery (SSRF)'

Mitigation

Install update from vendor's website.

Vulnerable software versions

WordPress: 0.71 - 3.4.2

External links

http://codex.wordpress.org/Version_3.5.1
http://core.trac.wordpress.org/changeset/23330
http://wordpress.org/news/2013/01/wordpress-3-5-1/
http://www.acunetix.com/blog/web-security-zone/wordpress-pingback-vulnerability/
http://bugzilla.redhat.com/show_bug.cgi?id=904120

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. However, a fully functional exploit for this vulnerability is available.

2) Cross-site scripting

EUVDB-ID: #VU42746

Risk: Low

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2013-0236

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 Cross-site scripting attacks.

An input validation error exists in WordPress before 3.5.1 when processing vectors involving (1) gallery shortcodes or (2) the content of a post. 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

WordPress: 0.71 - 3.4.2

External links

http://codex.wordpress.org/Version_3.5.1
http://core.trac.wordpress.org/changeset/23317
http://core.trac.wordpress.org/changeset/23322
http://wordpress.org/news/2013/01/wordpress-3-5-1/
http://bugzilla.redhat.com/show_bug.cgi?id=904121

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) Information disclosure

EUVDB-ID: #VU43225

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-5868

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

WordPress 3.4.2 does not invalidate a wordpress_sec session cookie upon an administrator's logout action, which makes it easier for remote attackers to discover valid session identifiers via a brute-force attack, or modify data via a replay attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

WordPress: 3.4.2

External links

http://whiteoaksecurity.com/blog/2012/12/17/cve-2012-5868-wordpress-342-sessions-not-terminated-upon-explicit-user-logout

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) Cross-site request forgery

EUVDB-ID: #VU43456

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2012-4448

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

WordPress: 3.4.2

External links

http://openwall.com/lists/oss-security/2012/09/25/15
http://packetstormsecurity.org/files/116785/WordPress-3.4.2-Cross-Site-Request-Forgery.html
http://secunia.com/advisories/50715
http://bugs.gentoo.org/show_bug.cgi?id=436198
http://bugzilla.redhat.com/show_bug.cgi?id=860261

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.