Modification of user accounts in Vtiger CRM - CVE-2016-4834

Vulnerability identifier: #VU256

CSH Severity: Medium

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

CVE-ID: CVE-2016-4834

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Vtiger CRM

Software vendor:
Vtiger

The vulnerability allows a remote attacker to modify user data on the target system.

The vulnerability exists due to a flaw in 'modules/Users/actions/Save.php' in the Users_Save_Action class. A remote authenticated attacker can create or modify user accounts via unspecified vectors.

Successful exploitation of this vulnerability may result in modification of system information.

A source code fix is available at:

http://code.vtiger.com/vtiger/vtigercrm/commit/7cdf9941197b4aa58114eafce3ce88fb418eb68c

• http://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000126.html