Improper input validation in Isc Bind
CVE-2016-6170
ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.409 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.405 · newest: 0.409 · change: +0.004
Affected products
- Isc Bind — versions 9.9.9, 9.10.4, 9.11.0
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.dns-oarc.net/pipermail/dns-operations/2016-July/015075.html (mailing-list, Mailing List, Third Party Advisory)
- lists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.html (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/07/06/3 (mailing-list, Mailing List, Third Party Advisory)
- www.securitytracker.com/id/1036241 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201610-07 (vendor-advisory, Third Party Advisory)
- kb.isc.org/article/AA-01390 (Vendor Advisory)
- www.securityfocus.com/bid/91611 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/sischkg/xfer-limit/blob/master/README.md (Exploit, Patch, Third Party Advisory)
- kb.isc.org/article/AA-01390/169/CVE-2016-6170 (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-6170?
- CVE-2016-6170 is a medium-severity vulnerability in Isc Bind, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-07-06.
- How severe is CVE-2016-6170?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2016-6170 known to be exploited?
- 23 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.