CVE-2022-41881

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.

Impact

A StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion.

Patches

Users should upgrade to 4.1.86.Final.

Workarounds

There is no workaround, except using a custom HaProxyMessageDecoder.

References

When parsing a TLV with type = PP2_TYPE_SSL, the value can be again a TLV with type = PP2_TYPE_SSL and so on. The only limitation of the recursion is that the TLV length cannot be bigger than 0xffff because it is encoded in an unsigned short type. Providing a TLV with a nesting level that is large enough will lead to raising of a StackOverflowError. The StackOverflowError will be caught if HAProxyMessageDecoder is used as part of Netty’s ChannelPipeline, but using it directly without the ChannelPipeline will lead to a thrown exception / crash.

For more information

If you have any questions or comments about this advisory:

• Open an issue in netty

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/

Asynchronous event-driven network application Java framework.

Security Fix(es):

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.(CVE-2022-41881)

Asynchronous event-driven network application Java framework.

Security Fix(es):

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.(CVE-2022-41881)

Asynchronous event-driven network application Java framework.

Security Fix(es):

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.(CVE-2022-41881)

Security Fix(es):

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.(CVE-2022-41881)

Security Fix(es):

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.(CVE-2022-41881)

Security Fix(es):

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.(CVE-2022-41881)

Root has patched GHSA-xpw8-rcwv-8f8p in the io.root.io.netty:netty-codec-http2 package for Root:Maven. Multiple fixed versions available.

Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.

TuxCare rebuilt 6 io.netty packages to address 11 CVEs. Fixed in 4.1.63.Final-tuxcare.2.

TuxCare rebuilt 6 io.netty packages to address 15 CVEs. Fixed in 4.1.52.Final-tuxcare.1.

TuxCare rebuilt 4 io.netty packages to address 5 CVEs. Fixed in 4.1.82.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 9 CVEs. Fixed in 4.1.58.Final-tuxcare.1.

TuxCare rebuilt 7 io.netty packages to address 14 CVEs. Fixed in 4.1.60.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 8 CVEs. Fixed in 4.1.75.Final-tuxcare.1.

TuxCare rebuilt 5 io.netty packages to address 5 CVEs. Fixed in 4.1.73.Final-tuxcare.1.

TuxCare rebuilt 4 io.netty packages to address 4 CVEs. Fixed in 4.1.48.Final-tuxcare.2.

TuxCare rebuilt 2 io.netty packages to address 2 CVEs. Fixed in 4.1.49.Final-tuxcare.3.

TuxCare rebuilt 7 io.netty packages to address 8 CVEs. Fixed in 4.1.79.Final-tuxcare.1.

TuxCare rebuilt 3 io.netty packages to address 4 CVEs. Fixed in 4.1.43.Final-tuxcare.1.

TuxCare rebuilt 11 io.netty packages to address 18 CVEs. Fixed in 4.1.80.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 13 CVEs. Fixed in 4.1.42.Final-tuxcare.1.

TuxCare rebuilt 14 io.netty packages to address 25 CVEs. Fixed in 4.1.53.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 11 CVEs. Fixed in 4.1.39.Final-tuxcare.1.

TuxCare rebuilt 11 io.netty packages to address 21 CVEs. Fixed in 4.1.51.Final-tuxcare.1.

TuxCare rebuilt 4 io.netty packages to address 6 CVEs. Fixed in 4.1.24.Final-tuxcare.1.

TuxCare rebuilt 4 io.netty packages to address 6 CVEs. Fixed in 4.1.29.Final-tuxcare.1.

TuxCare rebuilt 7 io.netty packages to address 10 CVEs. Fixed in 4.1.21.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 7 CVEs. Fixed in 4.1.31.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 8 CVEs. Fixed in 4.1.38.Final-tuxcare.1.

TuxCare rebuilt 6 io.netty packages to address 7 CVEs. Fixed in 4.1.23.Final-tuxcare.1.

TuxCare rebuilt io.netty:netty-codec-haproxy to address 2 CVEs. Fixed in 4.0.56.Final-tuxcare.2.

TuxCare rebuilt 11 io.netty packages to address 31 CVEs. Fixed in 4.1.46.Final-tuxcare.1.

TuxCare rebuilt io.netty:netty-codec-haproxy to address 1 CVE. Fixed in 4.1.81.Final-tuxcare.5.

These are all security issues fixed in the netty-4.1.114-1.1 package on the GA media of openSUSE Tumbleweed.

This update for netty, netty-tcnative fixes the following issues:

netty:

• Security fixes included in this version update from 4.1.75 to 4.1.90:

  • CVE-2022-24823: Local Information Disclosure Vulnerability in Netty on Unix-Like systems due temporary files for Java 6 and lower in io.netty:netty-codec-http (bsc#1199338)
  • CVE-2022-41881: HAProxyMessageDecoder Stack Exhaustion DoS (bsc#1206360)
  • CVE-2022-41915: HTTP Response splitting from assigning header value iterator (bsc#1206379)

• Other non-security bug fixes included in this version update from 4.1.75 to 4.1.90:

  • Build with Java 11 on ix86 architecture in order to avoid build failures
  • Fix HttpHeaders.names for non-String headers
  • Fix FlowControlHandler behaviour to pass read events when auto-reading is turned off
  • Fix brotli compression
  • Fix a bug in FlowControlHandler that broke auto-read
  • Fix a potential memory leak bug has been in the pooled allocator
  • Fix a scalability issue caused by instanceof and check-cast checks that lead to false-sharing on the Klass::secondary_super_cache field in the JVM
  • Fix a bug in our PEMParser when PEM files have multiple objects, and BouncyCastle is on the classpath
  • Fix several NullPointerException bugs
  • Fix a regression SslContext private key loading
  • Fix a bug in SslContext private key reading fall-back path
  • Fix a buffer leak regression in HttpClientCodec
  • Fix a bug where some HttpMessage implementations, that also implement HttpContent, were not handled correctly
  • Fix epoll bug when receiving zero-sized datagrams
  • Fix a bug in SslHandler so handlerRemoved works properly even if handlerAdded throws an exception
  • Fix an issue that allowed the multicast methods on EpollDatagramChannel to be called outside of an event-loop thread
  • Fix a bug where an OPT record was added to DNS queries that already had such a record
  • Fix a bug that caused an error when files uploaded with HTTP POST contained a backslash in their name
  • Fix an issue in the BlockHound integration that could occasionally cause NetUtil to be reported as performing blocking operation. A similar BlockHound issue was fixed for the JdkSslContext
  • Fix a bug that prevented preface or settings frames from being flushed, when an HTTP2 connection was established with prior-knowledge
  • Fix a bug where Netty fails to load a shaded native library
  • Fix and relax overly strict HTTP/2 header validation check that was rejecting requests from Chrome and Firefox
  • Fix OpenSSL and BoringSSL implementations to respect the jdk.tls.client.protocols and jdk.tls.server.protocols system properties, making them react to these in the same way the JDK SSL provider does
  • Fix inconsitencies in how epoll, kqueue, and NIO handle RDHUP
  • For a more detailed list of changes please consult the official release notes:
    • Changes from 4.1.90: https://netty.io/news/2023/03/14/4-1-90-Final.html
    • Changes from 4.1.89: https://netty.io/news/2023/02/13/4-1-89-Final.html
    • Changes from 4.1.88: https://netty.io/news/2023/02/12/4-1-88-Final.html
    • Changes from 4.1.87: https://netty.io/news/2023/01/12/4-1-87-Final.html
    • Changes from 4.1.86: https://netty.io/news/2022/12/12/4-1-86-Final.html
    • Changes from 4.1.85: https://netty.io/news/2022/11/09/4-1-85-Final.html
    • Changes from 4.1.84: https://netty.io/news/2022/10/11/4-1-84-Final.html
    • Changes from 4.1.82: https://netty.io/news/2022/09/13/4-1-82-Final.html
    • Changes from 4.1.81: https://netty.io/news/2022/09/08/4-1-81-Final.html
    • Changes from 4.1.80: https://netty.io/news/2022/08/26/4-1-80-Final.html
    • Changes from 4.1.79: https://netty.io/news/2022/07/11/4-1-79-Final.html
    • Changes from 4.1.78: https://netty.io/news/2022/06/14/4-1-78-Final.html
    • Changes from 4.1.77: https://netty.io/news/2022/05/06/2-1-77-Final.html
    • Changes from 4.1.76:…

This update for netty, netty-tcnative fixes the following issues:

netty:

• Security fixes included in this version update from 4.1.75 to 4.1.90:

  • CVE-2022-24823: Local Information Disclosure Vulnerability in Netty on Unix-Like systems due temporary files for Java 6 and lower in io.netty:netty-codec-http (bsc#1199338)
  • CVE-2022-41881: HAProxyMessageDecoder Stack Exhaustion DoS (bsc#1206360)
  • CVE-2022-41915: HTTP Response splitting from assigning header value iterator (bsc#1206379)

• Other non-security bug fixes included in this version update from 4.1.75 to 4.1.90:

  • Build with Java 11 on ix86 architecture in order to avoid build failures
  • Fix HttpHeaders.names for non-String headers
  • Fix FlowControlHandler behaviour to pass read events when auto-reading is turned off
  • Fix brotli compression
  • Fix a bug in FlowControlHandler that broke auto-read
  • Fix a potential memory leak bug has been in the pooled allocator
  • Fix a scalability issue caused by instanceof and check-cast checks that lead to false-sharing on the Klass::secondary_super_cache field in the JVM
  • Fix a bug in our PEMParser when PEM files have multiple objects, and BouncyCastle is on the classpath
  • Fix several NullPointerException bugs
  • Fix a regression SslContext private key loading
  • Fix a bug in SslContext private key reading fall-back path
  • Fix a buffer leak regression in HttpClientCodec
  • Fix a bug where some HttpMessage implementations, that also implement HttpContent, were not handled correctly
  • Fix epoll bug when receiving zero-sized datagrams
  • Fix a bug in SslHandler so handlerRemoved works properly even if handlerAdded throws an exception
  • Fix an issue that allowed the multicast methods on EpollDatagramChannel to be called outside of an event-loop thread
  • Fix a bug where an OPT record was added to DNS queries that already had such a record
  • Fix a bug that caused an error when files uploaded with HTTP POST contained a backslash in their name
  • Fix an issue in the BlockHound integration that could occasionally cause NetUtil to be reported as performing blocking operation. A similar BlockHound issue was fixed for the JdkSslContext
  • Fix a bug that prevented preface or settings frames from being flushed, when an HTTP2 connection was established with prior-knowledge
  • Fix a bug where Netty fails to load a shaded native library
  • Fix and relax overly strict HTTP/2 header validation check that was rejecting requests from Chrome and Firefox
  • Fix OpenSSL and BoringSSL implementations to respect the jdk.tls.client.protocols and jdk.tls.server.protocols system properties, making them react to these in the same way the JDK SSL provider does
  • Fix inconsitencies in how epoll, kqueue, and NIO handle RDHUP
  • For a more detailed list of changes please consult the official release notes:
    • Changes from 4.1.90: https://netty.io/news/2023/03/14/4-1-90-Final.html
    • Changes from 4.1.89: https://netty.io/news/2023/02/13/4-1-89-Final.html
    • Changes from 4.1.88: https://netty.io/news/2023/02/12/4-1-88-Final.html
    • Changes from 4.1.87: https://netty.io/news/2023/01/12/4-1-87-Final.html
    • Changes from 4.1.86: https://netty.io/news/2022/12/12/4-1-86-Final.html
    • Changes from 4.1.85: https://netty.io/news/2022/11/09/4-1-85-Final.html
    • Changes from 4.1.84: https://netty.io/news/2022/10/11/4-1-84-Final.html
    • Changes from 4.1.82: https://netty.io/news/2022/09/13/4-1-82-Final.html
    • Changes from 4.1.81: https://netty.io/news/2022/09/08/4-1-81-Final.html
    • Changes from 4.1.80: https://netty.io/news/2022/08/26/4-1-80-Final.html
    • Changes from 4.1.79: https://netty.io/news/2022/07/11/4-1-79-Final.html
    • Changes from 4.1.78: https://netty.io/news/2022/06/14/4-1-78-Final.html
    • Changes from 4.1.77: https://netty.io/news/2022/05/06/2-1-77-Final.html
    • Changes from 4.1.76:…