Summaryinfo

A vulnerability, which was classified as problematic, was found in Yuba U5cms up to 3.9.2. This impacts an unknown function of the file index.php. The manipulation of the argument Name results in cross site scripting. This vulnerability is known as CVE-2015-1575. It is possible to launch the attack remotely. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Yuba U5cms up to 3.9.2. Affected is some unknown functionality of the file index.php. The manipulation of the argument name with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Multiple cross-site scripting (XSS) vulnerabilities in u5CMS before 3.9.4 allow remote attackers to inject arbitrary web script or HTML via the (1) c, (2) i, (3) l, or (4) p parameter to index.php; the (5) a or (6) b parameter to u5admin/cookie.php; the name parameter to (7) copy.php or (8) delete.php in u5admin/; the (9) f or (10) typ parameter to u5admin/deletefile.php; the (11) n parameter to u5admin/done.php; the (12) c parameter to u5admin/editor.php; the (13) uri parameter to u5admin/meta2.php; the (14) n parameter to u5admin/notdone.php; the (15) newname parameter to u5admin/rename2.php; the (16) l parameter to u5admin/sendfile.php; the (17) s parameter to u5admin/characters.php; the (18) page parameter to u5admin/savepage.php; or the (19) name parameter to u5admin/new2.php.

The weakness was published 02/11/2015 (Website). The advisory is shared for download at zeroscience.mk. This vulnerability is traded as CVE-2015-1575 since 02/11/2015. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

A public exploit has been developed by LiquidWorm and been published even before and not after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:index.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.9.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (36029). Similar entries are available at VDB-74163, VDB-74162 and VDB-74161. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Yuba

Name

• U5cms

Version

• 3.9.0
• 3.9.1
• 3.9.2

CPE 2.3info

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CPE 2.2info

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