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USN-6148-1: SNI Proxy vulnerability

12 June 2023

SNI Proxy could be made to crash or run programs if it received specially crafted input.

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Releases

Packages

  • sniproxy - Transparent TLS and HTTP layer 4 proxy with SNI support

Details

It was discovered that SNI Proxy did not properly handle wildcard backend
hosts. An attacker could possibly use this issue to cause a buffer overflow,
resulting in a denial of service, or arbitrary code execution.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 23.04
Ubuntu 22.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

References

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Further reading