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SSRF in repository migration

Moderate severity GitHub Reviewed Published Mar 12, 2022 in gogs/gogs • Updated Jan 11, 2023

Package

gomod gogs.io/gogs (Go)

Affected versions

< 0.12.5

Patched versions

0.12.5

Description

Impact

The malicious user is able to discover services in the internal network through repository migration functionality. All installations accepting public traffic are affected.

Patches

Internal network CIDRs are prohibited to be used as repository migration targets. Users should upgrade to 0.12.5 or the latest 0.13.0+dev.

Workarounds

Run Gogs in its own private network.

References

https://www.huntr.dev/bounties/327797d7-ae41-498f-9bff-cc0bf98cf531/

For more information

If you have any questions or comments about this advisory, please post on #6754.

References

@unknwon unknwon published to gogs/gogs Mar 12, 2022
Published to the GitHub Advisory Database Mar 14, 2022
Reviewed Mar 14, 2022
Last updated Jan 11, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Weaknesses

CVE ID

No known CVE

GHSA ID

GHSA-q347-cg56-pcq4

Source code

Credits

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