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osvGoogleOSV:GHSA-PFVH-P8QP-9WW9
HistoryFeb 28, 2023 - 8:12 p.m.

Gogs OS Command Injection vulnerability

2023-02-2820:12:11
Google
osv.dev
160
gogs
command injection
ssh access
file systems
windows
macos
patch
sanitization
upgrade
workaround
disable
repository upload
security advisory
bounties
github issue.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.002 Low

EPSS

Percentile

55.1%

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 https://github.com/gogs/gogs/issues/7030.

CPENameOperatorVersion
gogs.io/gogslt0.12.11

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.002 Low

EPSS

Percentile

55.1%