Wordpress Resource Exhaustion - Denial of Service Vulnerability

2009.10.26

Credit: jcarlosn

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2009-3622

CWE: CWE-310

CVSS Base Score: 4.3/10

Impact Subscore: 2.9/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: None

Integrity impact: None

Availability impact: Partial

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
jcarlosn [http://rooibo.wordpress.com/] has discovered an Denial of
Service by Resource Exhaustion in all wordpress version.
This vulnerability affects the wp-trackbacks.php file and already exists
an available exploit for it.
The exploit: http://codes.zerial.org/php/wp-trackbacks_dos.phps
Execution:
$ while /bin/true; do php test.php http://target.bom/wordpress; done
hit!
hit!
hit!
hit!
hit!
hit!
hit!
hit!
hit!
hit!
Notice: fputs(): send of 8192 bytes failed with errno=11 Resource
temporarily unavailable
down!!
Load average: 22.07, 15.18, 8.58 (on target server)
- --
Fernando A. Lagos Berardi - Zerial
Desarrollador y Programador Web
Seguridad Informatica
Linux User #382319
Blog: http://blog.zerial.org
Skype: erzerial
Jabber: zerial () jabberes org
GTalk && MSN: fernando () zerial org
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Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
iEYEARECAAYFAkrcUsIACgkQIP17Kywx9JQnNQCeOwPir0lZxguy8d4LDmNzKxD8
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=pFaY
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References:

http://www.vupen.com/english/advisories/2009/2986

https://bugzilla.redhat.com/show_bug.cgi?id=530056

http://xforce.iss.net/xforce/xfdb/53884

http://www.osvdb.org/59077

http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/

http://securitytracker.com/id?1023072

http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.html

http://secunia.com/advisories/37088

http://seclists.org/fulldisclosure/2009/Oct/263

http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/

http://marc.info/?l=oss-security&m=125614592004825&w=2

http://marc.info/?l=oss-security&m=125612393329041&w=2

http://codes.zerial.org/php/wp-trackbacks_dos.phps

See this note in RAW Version

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Wordpress Resource Exhaustion - Denial of Service Vulnerability

References:

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