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Ubuntu 20.04 LTS USN-6371-1 Moderate: libssh2 Network Crash Risk

ubuntu
Calendar Grey September 14, 2023
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A critical libssh2 flaw affects numerous Ubuntu versions, potentially causing system failures when processing malicious network traffic. Take immediate action!
libssh2 could be made to crash if it received specially crafted network traffic.

Summary

libssh2 could be made to crash if it received specially

crafted network traffic.

Software Description:

- libssh2: Client-side C library implementing the SSH2 protocol

Details:

It was discovered that libssh2 incorrectly handled memory

access. An attacker could possibly use this issue to cause

a crash.

Topics%20covered

Topics Covered

security advisory moderate Ubuntu libssh2 network crash

Update Instructions

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

Ubuntu 20.04 LTS:
   libssh2-1                       1.8.0-2.1ubuntu0.1

Ubuntu 18.04 LTS:
   libssh2-1                       1.8.0-1ubuntu0.1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   libssh2-1                       1.5.0-2ubuntu0.1+esm2

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   libssh2-1                       1.4.3-2ubuntu0.2+esm3

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

References

  https://ubuntu.com/security/notices/USN-6371-1

  CVE-2020-22218

Ubuntu Security Notice USN-6371-1

Topics%20covered

Topics Covered

security advisory moderate Ubuntu libssh2 network crash

Package Information

  https://launchpad.net/ubuntu/+source/libssh2/1.8.0-2.1ubuntu0.1
  https://launchpad.net/ubuntu/+source/libssh2/1.8.0-1ubuntu0.1

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