CVE-2016-2774
MEDIUM severity · CVSS 5.9 · Improper input validation
5.9CVSS MEDIUM
Summary
ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)74%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://kb.isc.org/article/AA-01354Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.htmlAdvisory
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.htmlAdvisory
- http://rhn.redhat.com/errata/RHSA-2016-2590.htmlAdvisory
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlAdvisory
- http://www.securityfocus.com/bid/84208Advisory
- http://www.securitytracker.com/id/1035196Advisory