Deserialization of Untrusted Data in Yasr – Yet Another Stars Rating - #VU17273
Published: January 30, 2019
Vulnerability identifier: #VU17273
CSH Severity: High
CVSSv4.0: 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:P/U:Amber
CVE-ID: N/A
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Yasr – Yet Another Stars Rating
Yasr – Yet Another Stars Rating
Software vendor:
Dario Curvino
Dario Curvino
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data with unserializae() function in "/lib/yasr-functions.php" file. A remote attacker can pass specially crafted data via HTTP cookie to the application and execute arbitrary PHP code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.