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CVE-2024-53270

HighCVSS 7.5 / 10
Published Dec 18, 2024·Last modified Apr 10, 2026
Affected Components(0)

No affected components available

Description

Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions sendOverloadError is going to assume the active request exists when envoy.load_shed_points.http1_server_abort_dispatch is configured. If active_request is nullptr, only onMessageBeginImpl() is called. However, the onMessageBeginImpl will directly return ok status if the stream is already reset leading to the nullptr reference. The downstream reset can actually happen during the H/2 upstream reset. As a result envoy may crash. This issue has been addressed in releases 1.32.3, 1.31.5, 1.30.9, and 1.29.12. Users are advised to upgrade. Users unable to upgrade may disable http1_server_abort_dispatch load shed point and/or use a high threshold.

Risk Scores
Base Score
7.5

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.

Threat Intelligence
6.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.70%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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