dhcp: server hangs with TCP to failover peer port
Published Dec 17, 2010
5.0
MEDIUMCVSS 2.0
EPSS 7.95%
Description
ISC DHCP server 4.2 before 4.2.0-P2, when configured to use failover partnerships, allows remote attackers to cause a denial of service (communications-interrupted state and DHCP client service loss) by connecting to a port that is only intended for a failover peer, as demonstrated by a Nagios check_tcp process check to TCP port 520.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
dhcp
Not affected
Red Hat Enterprise Linux 6
dhcp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | dhcp | Not affected | n/a |
| Red Hat Enterprise Linux 6 | dhcp | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of dhcp as shipped with Red Hat Enterprise Linux 3, 4, 5, or 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.95% (0.07946) | 94.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.95% (0.07946) | 93.97th | v5 (v2026.06.15) |
| May 2, 2026 | 6.07% (0.06066) | 90.79th | v4 (v2025.03.14) |
| Nov 2, 2025 | 8.43% (0.08435) | 91.97th | v4 (v2025.03.14) |
| Mar 30, 2025 | 18.09% (0.18092) | 94.66th | v4 (v2025.03.14) |
| Mar 29, 2025 | 27.89% (0.27889) | 94.38th | v4 (v2025.03.14) |
| Mar 19, 2025 | 18.09% (0.18092) | 94.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 21.72% (0.21717) | 95.27th | v4 (v2025.03.14) |
| Dec 17, 2024 | 17.30% (0.17302) | 96.07th | v3 (v2023.03.01) |
| Nov 15, 2023 | 11.64% (0.11637) | 94.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 11.82% (0.11824) | 94.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.71% (0.04711) | 89.20th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.71% (0.04711) | 88.11th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.71% (0.04711) | 74.48th | v2 (v2022.01.01) |
References (15)
- http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052329.html vendor-advisoryx_refsource_FEDORA
- http://secunia.com/advisories/42618 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/42682 third-party-advisoryx_refsource_SECUNIA
- http://www.kb.cert.org/vuls/id/159528 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:001 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/45360 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1024862 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2010/3208 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0052 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2010-3616 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=662325 Issue Tracking
- https://lists.isc.org/pipermail/dhcp-users/2010-December/012368.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2010-3616
- https://www.cve.org/CVERecord?id=CVE-2010-3616
- https://www.isc.org/software/dhcp/advisories/cve-2010-3616 x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.