synced 13 MIN AGO
01 Record

CVE-2019-6470

dhcpd: use-after-free error leads crash in IPv6 mode when using mismatched BIND libraries

MediumPUBLISHEDCNA: isc
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

dhcpd: use-after-free error leads crash in IPv6 mode when using mismatched BIND libraries

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
8.81% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 94.7% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2019-11-01 22:15Z6 YR AGO
Last updated
2024-09-17 01:25Z2 YR AGO
Reserved
2019-01-16
Assigning CNA
isc
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
eccb753fff78ac2abd54dd307524390d0d6b05005a51560fda85f7b7fa2fb2f3

05 Affected products

VendorProductVersionsPlatforms
Multiple, non-ISCdhcpdbuilds not wholly from ISC source < 4.4.1—

06 References

07 Fixed in

Debian 12

  • isc-dhcp
    Fixed in 4.4.1-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • isc-dhcp
    Fixed in 4.4.1-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • isc-dhcp
    Fixed in 4.3.5-3ubuntu7.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.