libssh: Denial of service

libssh: Denial of service A vulnerability in libssh could allow a remote attacker to cause a Denial of Service condition. libssh 2020-04-10 2020-04-10 716788 remote 0.9.4 0.9.4

libssh is a multiplatform C library implementing the SSHv2 protocol on client and server side.

It was discovered that libssh could crash when AES-CTR ciphers are used.

A remote attacker running a malicious client or server could possibly crash the counterpart implemented with libssh and cause a Denial of Service condition.

Disable AES-CTR ciphers. If you implement a server using libssh it is recommended to use a prefork model so each session runs in an own process.

All libssh users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-libs/libssh-0.9.4"

CVE-2020-1730 whissi whissi