Description (CNA)
In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow during the RRSet canonicalisation routine. This is caused by missing to add the first owner name into the buffer length check. A malicious actor operating a malicious name server or tampering with an incoming response to Unbound (canonicalisation happens before DNSSEC validation), can trigger the vulnerability.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| NLnet Labs / Unbound | affected 0 before 1.26.1 |
CWE
CWE-122
References
ADP enrichment
No English description supplied.
No references supplied.