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http/range: NULL-ptr deref when http.memcap is reached

High
victorjulien published GHSA-j32j-4w6g-94hh Jul 11, 2024

Package

suricata

Affected versions

<=7.0.5

Patched versions

7.0.6

Description

Impact

A memory allocation failure due to http.memcap being reached leads to a NULL-ptr reference leading to a crash.

Patches

Upgrade to 7.0.6.

Workarounds

Disable the http.memcap or set to a very large value.

References

https://redmine.openinfosecfoundation.org/issues/7029 (master)
https://redmine.openinfosecfoundation.org/issues/7033 (7.0.x)

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-2024-38536

Weaknesses