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FreeBSD: VID-198D82F3-8777-11E7-950A-E8E0B747A45A (CVE-2016-7069): dnsdist -- multiple vulnerabilities

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FreeBSD: VID-198D82F3-8777-11E7-950A-E8E0B747A45A (CVE-2016-7069): dnsdist -- multiple vulnerabilities

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
08/21/2017
Created
07/25/2018
Added
08/23/2017
Modified
05/07/2019

Description

An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.

Solution(s)

  • freebsd-upgrade-package-dnsdist

References

  • CVE-2016-7069

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