CVE-2016-6170
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. High risk of service disruption.
- Exploit odds
- 40.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 40.9% in the next 30 days (EPSS).
- Severity: 6.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 40.9% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Isc Bind ≤ 9.9.8
- Isc Bind ≤ 9.10.3
- Isc Bind 9.9.9
- Isc Bind 9.10.4
- Isc Bind 9.11.0
- Redhat Enterprise Linux 5.0
- Redhat Enterprise Linux 6.0
- Redhat Enterprise Linux 7.0
Attack profile CVSS 3.1 · 6.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2016-6170.md and follow it. Check whether this project is affected by CVE-2016-6170. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://bugzilla.redhat.com/show_bug.cgi?id=1353563
- https://github.com/sischkg/xfer-limit/blob/master/README.md
- https://kb.isc.org/article/AA-01390
- https://kb.isc.org/article/AA-01390/169/CVE-2016-6170
- https://bugzilla.redhat.com/show_bug.cgi?id=1353563
- https://github.com/sischkg/xfer-limit/blob/master/README.md
- https://kb.isc.org/article/AA-01390
- https://kb.isc.org/article/AA-01390/169/CVE-2016-6170
References
- http://www.openwall.com/lists/oss-security/2016/07/06/3
- http://www.securityfocus.com/bid/91611
- http://www.securitytracker.com/id/1036241
- https://bugzilla.redhat.com/show_bug.cgi?id=1353563
- https://github.com/sischkg/xfer-limit/blob/master/README.md
- https://kb.isc.org/article/AA-01390
- https://kb.isc.org/article/AA-01390/169/CVE-2016-6170
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.html
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015075.html
- https://security.gentoo.org/glsa/201610-07
- http://www.openwall.com/lists/oss-security/2016/07/06/3
- http://www.securityfocus.com/bid/91611
- http://www.securitytracker.com/id/1036241
- https://bugzilla.redhat.com/show_bug.cgi?id=1353563
- https://github.com/sischkg/xfer-limit/blob/master/README.md
- https://kb.isc.org/article/AA-01390
- https://kb.isc.org/article/AA-01390/169/CVE-2016-6170
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.html
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015075.html
- https://security.gentoo.org/glsa/201610-07