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Himmelblau Security Advisory - CVE-2024-11738

Moderate
dmulder published GHSA-8339-5m7v-j33j Dec 2, 2024

Package

cargo rustls (Rust)

Affected versions

>= 0.23.13, <= 0.23.17

Patched versions

0.23.19

Description

Description

Himmelblau uses the rustls crate for TLS communication. A vulnerability (CVE-2024-11738) was discovered in rustls versions 0.23.13 through 0.23.17 that could allow an attacker to cause a denial of service (DoS) by sending a fragmented TLS ClientHello message.

While Himmelblau may not directly utilize the affected rustls::server::Acceptor::accept() API, this advisory is issued out of an abundance of caution to ensure all users are running a version of Himmelblau with a non-vulnerable rustls dependency.

Impact

None.

Patches

Users are encouraged to update to Himmelblau version 0.7.7/0.6.16 or later. This version includes an updated rustls dependency that addresses the vulnerability.

Workarounds

If immediate updating is not possible, users can manually update the rustls dependency in their Cargo.toml to version 0.23.19 or later and rebuild Himmelblau.

References

Severity

Moderate

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

CVE ID

CVE-2024-11738

Weaknesses

No CWEs