7.5high
CVE-2023-2829
Malformed NSEC records can cause named to terminate unexpectedly when synth-from-dnssec is enabled
Published 3 y ago · modified 13 d ago · JSON
CVSS
7.5
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
0.9%
percentile 59%
Public exploits
0
none known
Summary
A `named` instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache (RFC 8198) option (`synth-from-dnssec`) enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through 9.16.41-S1 and 9.18.11-S1 through 9.18.15-S1.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction (EPSS)
0.87% probability of exploitation in the next 30 days, higher than 59% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- ISC BIND 9
References
- kb.isc.org /docs/cve-2023-2829 · vendor-advisory, x_transferred
- security.netapp.com /advisory/ntap-20230703-0010/ · x_transferred
Sources
- CVE List: CVE-2023-2829
- NVD: CVE-2023-2829
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.