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Gogs OS Command Injection vulnerability

Critical severity GitHub Reviewed Published Feb 25, 2023 in gogs/gogs • Updated Mar 9, 2023

Package

gomod gogs.io/gogs (Go)

Affected versions

< 0.12.11

Patched versions

0.12.11

Description

Impact

The malicious user is able to update a crafted config file into repository's .git directory in combination with crafted file deletion to gain SSH access to the server on case-insensitive file systems. All installations with repository upload enabled (default) on case-insensitive file systems (Windows, macOS, etc.) are affected.

Patches

Make sanitization of upload path to .git directory to be case-insensitive. Users should upgrade to 0.12.11 or the latest 0.13.0+dev.

Workarounds

Disable repository upload.

References

https://huntr.dev/bounties/18cf9256-23ab-4098-a769-85f8da130f97/

For more information

If you have any questions or comments about this advisory, please post on gogs/gogs#7030.

References

@unknwon unknwon published to gogs/gogs Feb 25, 2023
Published by the National Vulnerability Database Feb 25, 2023
Published to the GitHub Advisory Database Feb 28, 2023
Reviewed Feb 28, 2023
Last updated Mar 9, 2023

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
None
User interaction
None
Scope
Unchanged
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/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.373%
(73rd percentile)

Weaknesses

CVE ID

CVE-2022-2024

GHSA ID

GHSA-pfvh-p8qp-9ww9

Source code

Credits

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