THREATPORT/VULNERABILITY/CVE-2024-6409
HIGH SEVERITY

CVE-2024-6409

CVE-2024-6409 vulnerability

CVSS
7.0
EPSS
27.9%
EPSS pct
98th
Exploited
No known
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.
Affected vendor
See references
Affected product
See references
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Weakness type (CWE)
Published
2024-07-08

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity, high impact to availability.

Its EPSS score of 27.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2024-6409

  • Confirm whether the affected software is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2024-6409.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-6409

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2024-6409 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2024-6409?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2024-6409.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2018-3758
Express Cart vulnerability
HIGH
CVE-2018-12053
Schools Alert Management Script vulnerability
HIGH
CVE-2018-12054
Schools Alert Management Script vulnerability