Headline
GHSA-ppxx-5m9h-6vxf: quic-go's path validation mechanism can be exploited to cause denial of service
An attacker can cause its peer to run out of memory sending a large number of PATH_CHALLENGE frames. The receiver is supposed to respond to each PATH_CHALLENGE frame with a PATH_RESPONSE frame. The attacker can prevent the receiver from sending out (the vast majority of) these PATH_RESPONSE frames by collapsing the peers congestion window (by selectively acknowledging received packets) and by manipulating the peer’s RTT estimate.
I published a more detailed description of the attack and its mitigation in this blog post: https://seemann.io/posts/2023-12-18-exploiting-quics-path-validation/
There’s no way to mitigate this attack, please update quic-go to a version that contains the fix.
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- CVE-2023-49295
quic-go’s path validation mechanism can be exploited to cause denial of service
Moderate severity GitHub Reviewed Published Jan 10, 2024 in quic-go/quic-go • Updated Jan 10, 2024
Package
gomod github.com/quic-go/quic-go (Go)
Affected versions
= 0.40.0
>= 0.39.0, < 0.39.4
>= 0.38.0, < 0.38.2
< 0.37.7
Patched versions
0.40.1
0.39.4
0.38.2
0.37.7
Description
Published to the GitHub Advisory Database
Jan 10, 2024
Last updated
Jan 10, 2024