Vulnerability · Published Aug 27, 2020 · Assigned by GitHub_P

CVE-2020-10517Improper access control in GitHub Enterprise Server leading to the enumeration of private repository names

Medium 4.3

In plain English

A medium-severity security flaw in GitHub Enterprise Server from GitHub. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 64% of all known vulnerabilities).

Severity (CVSS NVD)4.3Medium

Exploit odds (30 days)1.1%top 35.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to determine the names of unauthorized private repositories given their numerical IDs. This vulnerability did not allow unauthorized access to any repository content besides the name. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22 and was fixed in versions 2.21.6, 2.20.15, and 2.19.21. This vulnerability was reported via the GitHub Bug Bounty program.

Affected products (as reported)

Vendor	Product	Versions
GitHub	GitHub Enterprise Server	2.21 – before 2.21.62.20 – before 2.20.152.19 – before 2.19.21

Weakness: CWE-285

References

https://enterprise.github.com/releases/2.19.21/notes x_refsource_MISC
https://enterprise.github.com/releases/2.20.15/notes x_refsource_MISC
https://enterprise.github.com/releases/2.21.6/notes x_refsource_MISC