GHSA-7g2v-jj9q-g3rg

Suggest an improvement
Source
https://github.com/advisories/GHSA-7g2v-jj9q-g3rg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/02/GHSA-7g2v-jj9q-g3rg/GHSA-7g2v-jj9q-g3rg.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-7g2v-jj9q-g3rg
Aliases
Related
Published
2025-02-12T19:18:35Z
Modified
2025-02-18T15:12:02.261635Z
Severity
  • 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
Possible Log Injection in Rack::CommonLogger
Details

Summary

Rack::CommonLogger can be exploited by crafting input that includes newline characters to manipulate log entries. The supplied proof-of-concept demonstrates injecting malicious content into logs.

Details

When a user provides the authorization credentials via Rack::Auth::Basic, if success, the username will be put in env['REMOTE_USER'] and later be used by Rack::CommonLogger for logging purposes.

The issue occurs when a server intentionally or unintentionally allows a user creation with the username contain CRLF and white space characters, or the server just want to log every login attempts. If an attacker enters a username with CRLF character, the logger will log the malicious username with CRLF characters into the logfile.

Impact

Attackers can break log formats or insert fraudulent entries, potentially obscuring real activity or injecting malicious data into log files.

Mitigation

  • Update to the latest version of Rack.
Database specific 
{
    "nvd_published_at": "2025-02-12T17:15:24Z",
    "cwe_ids": [
        "CWE-117",
        "CWE-93"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2025-02-12T19:18:35Z"
}
References

Affected packages

RubyGems / rack

Package

Name
rack
Purl
pkg:gem/rack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.11

Affected versions

0.*

0.1.0
0.2.0
0.3.0
0.4.0
0.9.0
0.9.1

1.*

1.0.0
1.0.1
1.1.0
1.1.1.pre
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.2.0
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.3.0.beta
1.3.0.beta2
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.8
1.3.9
1.3.10
1.4.0
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.4.6
1.4.7
1.5.0.beta.1
1.5.0.beta.2
1.5.0
1.5.1
1.5.2
1.5.3
1.5.4
1.5.5
1.6.0.beta
1.6.0.beta2
1.6.0
1.6.1
1.6.2
1.6.3
1.6.4
1.6.5
1.6.6
1.6.7
1.6.8
1.6.9
1.6.10
1.6.11
1.6.12
1.6.13

2.*

2.0.0.alpha
2.0.0.rc1
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.0.9.1
2.0.9.2
2.0.9.3
2.0.9.4
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.4.1
2.1.4.2
2.1.4.3
2.1.4.4
2.2.0
2.2.1
2.2.2
2.2.3
2.2.3.1
2.2.4
2.2.5
2.2.6
2.2.6.1
2.2.6.2
2.2.6.3
2.2.6.4
2.2.7
2.2.8
2.2.8.1
2.2.9
2.2.10

RubyGems / rack

Package

Name
rack
Purl
pkg:gem/rack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.0
Fixed
3.0.12

Affected versions

3.*

3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.4.1
3.0.4.2
3.0.5
3.0.6
3.0.6.1
3.0.7
3.0.8
3.0.9
3.0.9.1
3.0.10
3.0.11

RubyGems / rack

Package

Name
rack
Purl
pkg:gem/rack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.1
Fixed
3.1.10

Affected versions

3.*

3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.7
3.1.8
3.1.9