regreSSHion — Amazon Linux Vulnerability
CVE-2024-6387
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.995 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.995 · newest: 0.995 · change: 0.000
Affected products
- Amazon Linux — versions 2023.0
- Apple macOS
- Arista Eos
- FreeBSD — versions 13.2, 13.3, 14.0
- NetApp 500f
- NetApp 500f Firmware
- NetApp 8300
- NetApp 8300 Firmware
- NetApp 8700
- NetApp 8700 Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2024:4312 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:4340 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:4389 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:4469 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:4474 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:4479 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:4484 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2024-6387 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory)
- santandersecurityresearch.github.io/blog/sshing_the_masses.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-6387?
- CVE-2024-6387 is a high-severity vulnerability in Amazon Linux, classified under Signal Handler Race Condition. CVSS score: 8.1/10. Published 2024-07-01.
- How severe is CVE-2024-6387?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2024-6387 known to be exploited?
- 253 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.