Resource exhaustion in Isc Dhcp
CVE-2022-2929
In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Isc Dhcp — versions 4.1-esv
- Isc Dhcp — versions 1.0 through versions before 4.1-ESV-R16-P2, 4.2 through versions before 4.4.3.-P1
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 35, 36, 37
Weakness classification (CWE)
Public proof-of-concept exploits
References
- kb.isc.org/docs/cve-2022-2929 (Vendor Advisory)
- lists.debian.org/debian-lts-announce/2022/10/msg00015.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202305-22 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-2929?
- CVE-2022-2929 is a medium-severity vulnerability in Isc Dhcp, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2022-10-07.
- How severe is CVE-2022-2929?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2022-2929 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.