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USN-4327-1: libssh vulnerability

9 April 2020

libssh could be made to crash if it received specially crafted network traffic.

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Releases

Packages

  • libssh - A tiny C SSH library

Details

Yasheng Yang discovered that libssh incorrectly handled AES-CTR ciphers. A
remote attacker could possibly use this issue to cause libssh to crash,
resulting in a denial of service.

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 19.10
Ubuntu 18.04

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

References

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Further reading