CVE-2017-18365 Information

Description

The Management Console in GitHub Enterprise 2.8.x before 2.8.7 has a deserialization issue that allows unauthenticated remote attackers to execute arbitrary code. This occurs because the enterprise session secret is always the same and can be found in the product’s source code. By sending a crafted cookie signed with this secret one can call Marshal.load with arbitrary data which is a problem because the Marshal data format allows Ruby objects.

CVSS Vector

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

Reference

https://enterprise.github.com/releases/2.8.7/notes https://www.exablue.de/blog/2017-03-15-github-enterprise-remote-code-execution.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8