Missing Authorization Check in GitHub Enterprise Server Allows Unauthorized Uploads to Repository Migration Exports
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user’s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying the migration identifier, an attacker could overwrite or replace a victim’s migration archive, potentially causing victims to download attacker-controlled repository data during migration restores or automated imports. An attacker would require authentication to the victim's GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:L
Affected products
GitHub · Enterprise ServerReferences
https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.23https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.18https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.14https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.11https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.5https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2