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Resource exhaustion vulnerability in h2 may lead to Denial of Service (DoS)

Moderate severity GitHub Reviewed Published Jan 19, 2024 to the GitHub Advisory Database • Updated Jan 19, 2024

Package

cargo h2 (Rust)

Affected versions

< 0.3.24
>= 0.4.0, < 0.4.2

Patched versions

0.3.24
0.4.2

Description

An attacker with an HTTP/2 connection to an affected endpoint can send a steady stream of invalid frames to force the
generation of reset frames on the victim endpoint.
By closing their recv window, the attacker could then force these resets to be queued in an unbounded fashion,
resulting in Out Of Memory (OOM) and high CPU usage.

This fix is corrected in hyperium/h2#737, which limits the total number of
internal error resets emitted by default before the connection is closed.

References

Published to the GitHub Advisory Database Jan 19, 2024
Reviewed Jan 19, 2024
Last updated Jan 19, 2024

Severity

Moderate

Weaknesses

No CWEs

CVE ID

No known CVE

GHSA ID

GHSA-8r5v-vm4m-4g25

Source code

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