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Traefik HTTP header parsing could cause a denial of service

High severity GitHub Reviewed Published Apr 11, 2023 in traefik/traefik • Updated May 17, 2023

Package

gomod github.com/traefik/traefik/v2 (Go)

Affected versions

< 2.9.10
= 2.10.0-rc1

Patched versions

2.9.10
2.10.0-rc2

Description

Impact

There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik.
HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service.

References

Patches

Workarounds

No workaround.

For more information

If you have any questions or comments about this advisory, please open an issue.

References

@nmengin nmengin published to traefik/traefik Apr 11, 2023
Published to the GitHub Advisory Database Apr 11, 2023
Reviewed Apr 11, 2023
Published by the National Vulnerability Database Apr 14, 2023
Last updated May 17, 2023

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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
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:N/I:N/A:H

EPSS score

0.131%
(49th percentile)

Weaknesses

CVE ID

CVE-2023-29013

GHSA ID

GHSA-7hj9-rv74-5g92

Source code

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