Remote PHP code injection in Kaltura

1) Use of hard-coded credentials

EUVDB-ID: #VU9433

Risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2017-14143

CWE-ID: CWE-798 - Use of Hard-coded Credentials

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to usage of hard-coded secret in "userzone" cookie in the getUserzoneCookie() function in "/lib/kalturaAction.class.php" file and deserialization of untrusted data in /modules/system/actions/helperAction.class.php and
/server/plugins/admin_console/kaltura_internal_tools/admin/KalturaInternalToolsSystemHelperAction.php files. A remote unauthenticated attacker can set the "userzone" cookie into "y3tAno3therS$cr3T" value and execute arbitrary PHP code on the target system with privileges of the current web server.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable server.

Mitigation

Update to version 13.2.0.

Vulnerable software versions

Kaltura: 13.0.0 - 13.1.0

CPE2.3

• cpe:2.3:a:kaltura:kaltura:13.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:kaltura:kaltura:13.1.0:*:*:*:*:*:*:*

External links

https://github.com/kaltura/server/commit/6a6d14328b7a1493e8c47f9565461e5f88be20c9#diff-0770640cc7611...
https://forum.kaltura.org/t/kaltura-ce-13-2-0-released/7540

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.