CVE-2019-8460
- State
- Published
- Severity
- Not scored
- Published
- Aug 26, 2019
- Updated
- Aug 4, 2024
- Reserved
- Feb 18, 2019
Description
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.
Scores
The record has no CVSS score.
Weaknesses
Affected Products
| Product | Versions |
|---|---|
OpenBSDn/a |
|
References
- https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig
- https://security.netapp.com/advisory/ntap-20190905-0001/
- https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/
- https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03
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