CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
AI Score
Confidence
Low
EPSS
Percentile
13.8%
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.
access.redhat.com/errata/RHSA-2024:4457
access.redhat.com/errata/RHSA-2024:4613
access.redhat.com/errata/RHSA-2024:4716
access.redhat.com/errata/RHSA-2024:4910
access.redhat.com/errata/RHSA-2024:4955
access.redhat.com/errata/RHSA-2024:4960
access.redhat.com/errata/RHSA-2024:5444
access.redhat.com/security/cve/CVE-2024-6409
bugzilla.redhat.com/show_bug.cgi?id=2295085