CVE-2016-6170

high-risk
Published 2016-07-06

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.

Do I need to act?

!
13.0% chance of exploitation in next 30 days
EPSS score — higher than 87% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (14)

Affected Vendors

Isc Redhat

References (22)

Mailing List http://www.openwall.com/lists/oss-security/2016/07/06/3
Third Party Advisory http://www.securityfocus.com/bid/91611
Third Party Advisory http://www.securitytracker.com/id/1036241
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1353563
Exploit https://github.com/sischkg/xfer-limit/blob/master/README.md
Vendor Advisory https://kb.isc.org/article/AA-01390
Vendor Advisory https://kb.isc.org/article/AA-01390/169/CVE-2016-6170
Mailing List https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
Mailing List https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.html
Mailing List https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015075.html
Third Party Advisory https://security.gentoo.org/glsa/201610-07
Mailing List http://www.openwall.com/lists/oss-security/2016/07/06/3
Third Party Advisory http://www.securityfocus.com/bid/91611
Third Party Advisory http://www.securitytracker.com/id/1036241
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1353563
Exploit https://github.com/sischkg/xfer-limit/blob/master/README.md
Vendor Advisory https://kb.isc.org/article/AA-01390
Vendor Advisory https://kb.isc.org/article/AA-01390/169/CVE-2016-6170
Mailing List https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
Mailing List https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.html
and 2 more references
54
/ 100
high-risk
Severity 24/34 · High
Exploitability 12/34 · Low
Exposure 18/34 · Moderate