VulnerabilityModified
CVE-2016-6171
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.
HIGH 8.6EPSS 2.80%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.1
- 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 2.80% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- knot-dns/knot dns
- Source
- secalert@redhat.com
References
- http://www.openwall.com/lists/oss-security/2016/07/06/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/06/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/91678Third Party Advisory, VDB Entry
- https://github.com/sischkg/xfer-limit/blob/master/README.mdPatch, Third Party Advisory
- https://gitlab.labs.nic.cz/labs/knot/blob/c546a70563ef4c7badb7cb5bdf6d1ba8e7adae82/NEWSRelease Notes, VDB Entry
- https://gitlab.labs.nic.cz/labs/knot/issues/464Vendor Advisory
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.htmlTechnical Description
- http://www.openwall.com/lists/oss-security/2016/07/06/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/06/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/91678Third Party Advisory, VDB Entry
- https://github.com/sischkg/xfer-limit/blob/master/README.mdPatch, Third Party Advisory
- https://gitlab.labs.nic.cz/labs/knot/blob/c546a70563ef4c7badb7cb5bdf6d1ba8e7adae82/NEWSRelease Notes, VDB Entry
- https://gitlab.labs.nic.cz/labs/knot/issues/464Vendor Advisory
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.htmlTechnical Description
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.