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TI-2012-03376 Aliases CVE-2012-3955GHSA-6xcv-87wr-7rfm

ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to…

Priority MEDIUM 51Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
None · None · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.

Why it matters now

EPSS 0.21653 97th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 31

CPEVersionsRoleVendor
cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*4.1-esvVulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*4.1-esv r1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*4.1-esv r2VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*4.1-esv r3VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*4.1-esv r3_b1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:*4.1-esv r4VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:*4.1-esv r5VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:*4.1-esv r5_b1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:*4.1-esv r5_rc1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:*4.1-esv r5_rc2VulnerableISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:* Versions 4.1-esv Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:* Versions 4.1-esv r1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:* Versions 4.1-esv r2 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:* Versions 4.1-esv r3 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:* Versions 4.1-esv r3_b1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:* Versions 4.1-esv r4 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:* Versions 4.1-esv r5 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:* Versions 4.1-esv r5_b1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:* Versions 4.1-esv r5_rc1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:* Versions 4.1-esv r5_rc2 Vulnerable ·ISC
Show 21 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:*4.1-esv r6VulnerableISC
cpe:2.3:a:isc:dhcp:4.1-esv:rc1:*:*:*:*:*:*4.1-esv rc1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.0:-:*:*:*:*:*:*4.1.0VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.0:a1:*:*:*:*:*:*4.1.0 a1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.0:a2:*:*:*:*:*:*4.1.0 a2VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.0:b1:*:*:*:*:*:*4.1.0 b1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.1:-:*:*:*:*:*:*4.1.1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.1:b1:*:*:*:*:*:*4.1.1 b1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.1:b2:*:*:*:*:*:*4.1.1 b2VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.1:b3:*:*:*:*:*:*4.1.1 b3VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.1:rc1:*:*:*:*:*:*4.1.1 rc1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.2:-:*:*:*:*:*:*4.1.2VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.2:b1:*:*:*:*:*:*4.1.2 b1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.2:p1:*:*:*:*:*:*4.1.2 p1VulnerableISC
cpe:2.3:a:isc:dhcp:4.1.2:rc1:*:*:*:*:*:*4.1.2 rc1VulnerableISC
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*6.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:*10.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*11.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*11.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*12.04VulnerableCanonical
  • cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:* Versions 4.1-esv r6 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1-esv:rc1:*:*:*:*:*:* Versions 4.1-esv rc1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.0:-:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.0:a1:*:*:*:*:*:* Versions 4.1.0 a1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.0:a2:*:*:*:*:*:* Versions 4.1.0 a2 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.0:b1:*:*:*:*:*:* Versions 4.1.0 b1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.1:-:*:*:*:*:*:* Versions 4.1.1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.1:b1:*:*:*:*:*:* Versions 4.1.1 b1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.1:b2:*:*:*:*:*:* Versions 4.1.1 b2 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.1:b3:*:*:*:*:*:* Versions 4.1.1 b3 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.1:rc1:*:*:*:*:*:* Versions 4.1.1 rc1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.2:-:*:*:*:*:*:* Versions 4.1.2 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.2:b1:*:*:*:*:*:* Versions 4.1.2 b1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.2:p1:*:*:*:*:*:* Versions 4.1.2 p1 Vulnerable ·ISC
  • cpe:2.3:a:isc:dhcp:4.1.2:rc1:*:*:*:*:*:* Versions 4.1.2 rc1 Vulnerable ·ISC
  • cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:* Versions 10.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* Versions 11.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:* Versions 11.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical

Remediation

Red Hat 1 advisory

  • RHSA-2013:0504 Released 2013-02-20 · Red Hat rating Low
    dhcp security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) dhclient-12:4.1.1-34.P1.el6, dhcp-12:4.1.1-34.P1.el6, dhcp-common-12:4.1.1-34.P1.el6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) dhcp-12:4.1.1-34.P1.el6, dhcp-devel-12:4.1.1-34.P1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) dhclient-12:4.1.1-34.P1.el6, dhcp-12:4.1.1-34.P1.el6, dhcp-common-12:4.1.1-34.P1.el6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) dhcp-12:4.1.1-34.P1.el6, dhcp-devel-12:4.1.1-34.P1.el6
    • Red Hat Enterprise Linux Server (v. 6) dhclient-12:4.1.1-34.P1.el6, dhcp-12:4.1.1-34.P1.el6, dhcp-common-12:4.1.1-34.P1.el6
    • Red Hat Enterprise Linux Server Optional (v. 6) dhcp-12:4.1.1-34.P1.el6, dhcp-devel-12:4.1.1-34.P1.el6, dhcp-devel-12:4.1.1-34.P1.el6.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) dhclient-12:4.1.1-34.P1.el6, dhcp-12:4.1.1-34.P1.el6, dhcp-common-12:4.1.1-34.P1.el6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) dhcp-12:4.1.1-34.P1.el6, dhcp-devel-12:4.1.1-34.P1.el6

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2013:0504
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2013:0504
Not affected: 1 product
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-3955
  2. 2026-10-03 Alias added: GHSA-6xcv-87wr-7rfm

References

Advisory 13

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences