Knot DNS before 2.3.0 allows remote DNS servers to cause a denial of service (memory exhaustion and slave server crash) via a large zone transfer for (1) DDNS, (2) AXFR, or (3) IXFR.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 8.6 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | 3.9 | 4.0 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-400,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| knot-dns | knot_dns | * |
Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 5.9 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N | 2.2 | 3.6 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-20,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| knot-dns | knot_dns | 2.5.0 |
| knot-dns | knot_dns | 2.5.1 |
| debian | debian_linux | 8.0 |
| knot-dns | knot_dns | * |
| debian | debian_linux | 10.0 |
| debian | debian_linux | 9.0 |