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Gogs allows argument injection during the previewing of changes

Critical severity GitHub Reviewed Published Dec 23, 2024 in gogs/gogs • Updated Dec 23, 2024

Package

gomod gogs.io/gogs (Go)

Affected versions

<= 0.13.0

Patched versions

0.13.1

Description

Impact

Unprivileged user accounts can write to arbitrary files on the filesystem. We could demonstrate its exploitation to force a re-installation of the instance, granting administrator rights. It allows accessing and altering any user's code hosted on the same instance.

Patches

Unintended Git options has been ignored for diff preview (gogs/gogs#7871). Users should upgrade to 0.13.1 or the latest 0.14.0+dev.

Workarounds

No viable workaround available, please only grant access to trusted users to your Gogs instance on affected versions.

References

https://www.cve.org/CVERecord?id=CVE-2024-39932

References

@unknwon unknwon published to gogs/gogs Dec 23, 2024
Published to the GitHub Advisory Database Dec 23, 2024
Reviewed Dec 23, 2024
Last updated Dec 23, 2024

Severity

Critical

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
High
Integrity
High
Availability
High

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

EPSS score

0.043%
(11th percentile)

Weaknesses

CVE ID

CVE-2024-39932

GHSA ID

GHSA-9pp6-wq8c-3w2c

Source code

Credits

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