CVE-2024-6409
Scores
EPSS
Percentile: 78.2%
CVSS
CVSS Score: 7.0/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
High (H)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
Low (L)
Measures the impact to the confidentiality of information
Integrity Impact
Low (L)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
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.
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Sources
CWEs
Related Vulnerabilities
Vulnerable Software (9)
Type: Configuration
Product: openssh
Operating System: ubuntu focal 20.04
{ "unaffected": true}
Source: ubuntu
Type: Configuration
Product: openssh
Operating System: ubuntu jammy 22.04
{ "unaffected": true}
Source: ubuntu
Type: Configuration
Product: openssh
Operating System: rhel
{ "fixed": "8.7p1-38.el9_4.4"}
Source: redhat
Type: Configuration
Product: openssh
Operating System: rhel 9
{ "fixed": "8.7p1-38.el9_4.4"}
Source: redhat
Type: Configuration
Product: openssh
Operating System: rhel
{ "fixed": "8.7p1-12.el9_0.3"}
Source: redhat
Type: Configuration
Product: openssh
Operating System: rhel
{ "fixed": "8.7p1-30.el9_2.7"}
Source: redhat
Type: Configuration
Product: openssh
Operating System: debian
{ "unaffected": true}
Source: debian
Type: Configuration
Product: openssh-ssh1
Operating System: ubuntu focal 20.04
{ "unaffected": true}
Source: ubuntu
Type: Configuration
Product: openssh-ssh1
Operating System: ubuntu jammy 22.04
{ "unaffected": true}
Source: ubuntu