Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.117
EPSS Ranking 93.3%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
Products affected by CVE-2017-18365
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cpe:2.3:a:github:github:2.8.0
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cpe:2.3:a:github:github:2.8.1
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cpe:2.3:a:github:github:2.8.2
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cpe:2.3:a:github:github:2.8.3
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cpe:2.3:a:github:github:2.8.4
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cpe:2.3:a:github:github:2.8.5
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cpe:2.3:a:github:github:2.8.6
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cpe:2.3:a:github:github:2.8.7