Vulnerability in Nlnetlabs Unbound
CVE-2019-25040
Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Nlnetlabs Unbound
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/ (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/05/msg00007.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210507-0007/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-25040?
- CVE-2019-25040 is a high-severity vulnerability in Nlnetlabs Unbound, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2021-04-27.
- How severe is CVE-2019-25040?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-25040 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.