Home/CVE/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 sessio
CVE

CVE-2016-2774

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 sessio

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.

MEDIUM · CVSS 5.9 EPSS 0.65582
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

1
isc dhcpall versions
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighDHCP Server Error Failed Loading the CallOut DLL
producthighDHCP Server Loaded the CallOut DLL
producthighDHCP Callout DLL Installation
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Mar 2016 · 03:59 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

6
usnUSN-3586-1
suse-csafSUSE-SU-2016:2024-1
suse-csafSUSE-SU-2016:1791-1
suse-csafSUSE-SU-2016:1735-1
suse-csafSUSE-SU-2016:1692-1
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.htmlMailing ListThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2590.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
http://www.securityfocus.com/bid/84208Third Party AdvisoryVDB Entry
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