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Command Injection in gitserver

High
evict published GHSA-pfm3-23mh-6xjp Nov 22, 2022

Package

gomod Sourcegraph (Go)

Affected versions

< 4.1.0

Patched versions

4.1.0

Description

Impact

A Command Injection vulnerability existed in the gitserver service, present in all Sourcegraph deployments. This vulnerability was caused by a lack of input validation on the host parameter of the /list-gitolite endpoint. It was possible to send a crafted request to gitserver that would execute commands inside the container.

Successful exploitation requires the ability to send local requests to gitserver.

Patches

The issue is patched in version 4.1.0.

References

For more information

If you have any questions or comments about this advisory email us at security@sourcegraph.com

Severity

High

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
Adjacent
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low

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

CVE ID

CVE-2022-41942