Oracle Linux: CVE-2024-6409: ELSA-2024-4457: openssh security update (MODERATE) (Multiple Advisories)

Oracle Linux: CVE-2024-6409: ELSA-2024-4457:openssh security update (MODERATE) (Multiple Advisories)

Severity

7

CVSS

(AV:N/AC:H/Au:N/C:P/I:P/A:C)

Published

07/08/2024

Created

07/12/2024

Added

08/16/2024

Modified

11/22/2024

Description

A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.

Solution(s)

• oracle-linux-upgrade-openssh
• oracle-linux-upgrade-openssh-askpass
• oracle-linux-upgrade-openssh-clients
• oracle-linux-upgrade-openssh-keycat
• oracle-linux-upgrade-openssh-server
• oracle-linux-upgrade-pam-ssh-agent-auth

References

• https://attackerkb.com/topics/cve-2024-6409
• CVE - 2024-6409
• ELSA-2024-4457