CVE-2017-18365

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 v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.exablue.de/blog/2017-03-15-github-enterprise-remote-code-execution.html	Exploit Third Party Advisory
https://enterprise.github.com/releases/2.8.7/notes	Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:github:github:::::enterprise:::*
	cpe:2.3:a:github:github:2.8.7:::::::*

Information

Published : 2019-03-27 23:29

Updated : 2019-03-29 08:03

NVD link : CVE-2017-18365

Mitre link : CVE-2017-18365

JSON object : View

CWE

CWE-502

Deserialization of Untrusted Data

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Products Affected

github

github

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