CVE-2019-6470
dhcpd: use-after-free error leads crash in IPv6 mode when using mismatched BIND libraries
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
06 References
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2019:2060
- lists.opensuse.orghttps://lists.opensuse.org/opensuse-security-announce/2019-10/msg00049.html
- lists.opensuse.orghttps://lists.opensuse.org/opensuse-security-announce/2019-10/msg00048.html
- bugs.debian.orghttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896122
- access.redhat.comRHSA-2019:3525https://access.redhat.com/errata/RHSA-2019:3525
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.