Vulnerability in Openbsd
CVE-2019-8460
OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.
EPSS: 0.022 (80.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Openbsd
- N/a Openbsd — versions All, including latest - 6.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@checkpoint.com (Patch, Third Party Advisory, x_refsource_MISC)
- cve@checkpoint.com (Exploit, x_refsource_MISC, Vendor Advisory)
- cve@checkpoint.com (x_refsource_CONFIRM, Third Party Advisory)
- cve@checkpoint.com (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Press/Media Coverage)
- cve@checkpoint.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-8460?
- CVE-2019-8460 is a high-severity vulnerability in Openbsd, classified under CWE-1049. CVSS score: 7.5/10. Published 2019-08-26.
- How severe is CVE-2019-8460?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-8460 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.