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CVE

GHSA-xpw8-rcwv-8f8p

io.netty:netty-codec-http2 vulnerable to HTTP/2 Rapid Reset Attack
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CVE

GHSA-xpw8-rcwv-8f8p

io.netty:netty-codec-http2 vulnerable to HTTP/2 Rapid Reset Attack

A client might overload the server by issue frequent RST frames. This can cause a massive amount of load on the remote system and so cause a DDOS attack. 

Impact

This is a DDOS attack, any http2 server is affected and so you should update as soon as possible.

Patches

This is patched in version 4.1.100.Final.

Workarounds

A user can limit the amount of RST frames that are accepted per connection over a timeframe manually using either an own Http2FrameListener implementation or an ChannelInboundHandler implementation (depending which http2 API is used).

References

  • https://www.cve.org/CVERecord?id=CVE-2023-44487
  • https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/
  • https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/

Package Versions Affected

Package Version
patch Availability
io.netty:netty-all 4.1.46.Final
Available
Unavailable
io.netty:netty-codec-http2 4.1.46.Final
Available
Unavailable

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Related Resources

No items found.

References

https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3, https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p, https://nvd.nist.gov/vuln/detail/CVE-2023-44487, https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61, https://github.com/netty/netty, https://www.cve.org/CVERecord?id=CVE-2023-44487

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0%
EPSS Percentile
0%
Introduced Version
4.1.0.CR1
Fix Available
4.1.100.Final

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