CVE-2025-11232
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at the default setting, which is "[^A-Za-z0-9.-]"; "hostname-char-replacement" must be empty (the default); and "ddns-qualifying-suffix" must NOT be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ISC | Kea | 3.0.1 <= 3.0.1 | affected |
| ISC | Kea | 3.1.1 <= 3.1.2 | affected |
| ISC | Kea | 2.6.0 <= 2.6.4 | unaffected |
| ISC | Kea | 2.7.0 <= 2.7.9 | unaffected |
| ISC | Kea | 3.0.0 <= 3.0.0 | unaffected |
| ISC | Kea | 3.1.0 <= 3.1.0 | unaffected |
Weaknesses
- CWE-823: CWE-823 Use of Out-of-range Pointer Offset
Workarounds
Setting "hostname-char-replacement" to anything other than an empty value (suggestion: "x") is an effective workaround to this issue, regardless of other settings.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
CVE Program Container
Additional References
References
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