[PT-2011-20] Authorization bypass vulnerability in OneOrZero AIMS

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     (PT-2011-20) Positive Technologies Security Advisory 

      Authorization bypass vulnerability in OneOrZero AIMS

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---[Vulnerable software]

OneOrZero AIMS 
Version: 2.7.0 and earlier (possibly)

Application link: 
http://www.oneorzero.com/

---[Severity level]

Severity level: High 
Impact: Authorization bypass 
Access Vector: Network exploitable 
CVSS v2: 
Base Score: 10.0 
Temporal Score: 8.6 
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P/E:P/RL:O/RC:C)

CVE: not assigned

---[Software description]

OneOrZero AIMS is a powerful enterprise ready suite that includes a help desk, 
knowledge base, time manager and reporting system supported by a highly 
configurable and extensible Action & Information Management System that allows 
you to 'build your own system' on the fly.

---[Vulnerability description]

Positive Research Center has discovered authorization bypass vulnerability in 
OneOrZero AIMS. 
Vulnerability exists due incorrect logic of authorization using $_COOKIE 
variables - predictable session value, stored in $_COOKIE['oozimsrememberme'] 
variable. 
Attacker, have valid username which registered in system, can generate session 
and bypass authorization.

---[How to fix]

Review algorithm of authorization with $_COOKIE['oozimsrememberme'] variable 
and add some logic to associate this variable with password.

---[Advisory status]

08.07.2011 - Vendor is notified 
23.08.2011 - Vulnerability details were sent to CERT 
19.10.2011 - Public disclosure 
Credits

The vulnerability was detected by Yuri Goltsev, Positive Research Center 
(Positive Technologies Company)

---[References]

http://en.securitylab.ru/lab/PT-2011-20 
http://www.kb.cert.org/vuls/id/800227

Reports on the vulnerabilities previously discovered by Positive Research:

http://www.ptsecurity.com/advisory1.aspx 
http://en.securitylab.ru/lab/

---[About Positive Technologies]

Positive Technologies www.ptsecurity.com is among the key players in the IT 
security market in Russia.

The principal activities of the company include the development of integrated 
tools for information security monitoring (MaxPatrol); providing IT security 
consulting services and technical support; development of the Securitylab 
leading Russian information security portal.

Among the clients of Positive Technologies, there are more than 40 state 
enterprises, more than 50 banks and financial organizations, 
20 telecommunication companies, more than 40 plant facilities, as well as IT, 
service and retail companies from Russia, the CIS countries, the Baltic States, 
China, Ecuador, Germany, Great Britain, Holland, Iran, Israel, Japan, Mexico, 
the Republic of South Africa, Thailand, Turkey, and the USA.

Positive Technologies is a team of highly skilled developers, advisers and 
experts with years of vast hands-on experience. The company specialists possess 
professional titles and certificates; they are the members of various 
international societies and are actively involved in the IT security field 
development.