CVE-2023-4408
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Parsing large DNS messages may cause excessive CPU load
The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
BIND 9
- Vendor
- ISC
- Product
- BIND 9
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 9.0.0 | affected | custom | Unavailable | 9.16.45 | None listed |
| 9.18.0 | affected | custom | Unavailable | 9.18.21 | None listed |
| 9.19.0 | affected | custom | Unavailable | 9.19.19 | None listed |
| 9.9.3-S1 | affected | custom | Unavailable | 9.11.37-S1 | None listed |
| 9.16.8-S1 | affected | custom | Unavailable | 9.16.45-S1 | None listed |
| 9.18.11-S1 | affected | custom | Unavailable | 9.18.21-S1 | None listed |