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CVE-2018-1000525: Openpsa2: Remote code execution

CVE-2018-1000525 is rated critical with a CVSS v3.0 base score of 9.8 and affects Openpsa2. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

openpsa contains a PHP Object Injection vulnerability in Form data passed as GET request variables that can result in Possible information disclosure and remote code execution. This attack appear to be exploitable via Specially crafted GET request variable containing serialised PHP object. This vulnerability appears to have been fixed in after commit 097eae0.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-502: Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected products

  • Openpsa2: all versions listed by NVD

References