VULNERABILITY

Red Hat: CVE-2020-1730: CVE-2020-1730 libssh: denial of service when handling AES-CTR (or DES) ciphers (Multiple Advisories)

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Red Hat: CVE-2020-1730: CVE-2020-1730 libssh: denial of service when handling AES-CTR (or DES) ciphers (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
04/13/2020
Created
11/06/2020
Added
11/05/2020
Modified
12/15/2023

Description

A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.

Solution(s)

  • redhat-upgrade-libssh
  • redhat-upgrade-libssh-config
  • redhat-upgrade-libssh-debuginfo
  • redhat-upgrade-libssh-debugsource
  • redhat-upgrade-libssh-devel

References

  • CVE-2020-1730
  • RHSA-2020:4545

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