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rules: stack overflow in transforms

High
victorjulien published GHSA-x2hr-33vp-w289 Jan 6, 2025

Package

suricata

Affected versions

< 7.0.8

Patched versions

7.0.8

Description

Impact

A large input buffer to one of the following transforms can lead to a stack overflow causing Suricata to crash in the following transforms:

  • to_lowercase
  • to_uppercase
  • strip_whitespace
  • compress_whitespace
  • dotprefix
  • header_lowercase
  • strip_pseudo_headers
  • url_decode
  • xor

Patches

The issue has been addressed in Suricata 7.0.8.

Workarounds

Avoid using these transforms on file.data sticky buffer.

References

https://redmine.openinfosecfoundation.org/issues/7229

Credits

Reported by Simen Lybekk

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

CVE ID

CVE-2024-55605

Weaknesses