CVE-2019-25040
HIGHCVSS 7.5/10EPSS 1.99%
Last modified
CVE-2019-25040 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.99% chance of exploitation in the next 30 days.
Description
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
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nlnetlabs | Unbound | < 1.9.5 |
| Debian | Debian Linux | 9.0 |
References
- https://lists.debian.org/debian-lts-announce/2021/05/msg00007.htmlMailing List, Third Party Advisory
- https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0007/Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/05/msg00007.htmlMailing List, Third Party Advisory
- https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0007/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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
How severe is CVE-2019-25040?
CVE-2019-25040 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.99% probability of exploitation in the next 30 days.
How do I fix CVE-2019-25040?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2019-25040?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST