CVEvulnerability
CVE-2016-7069
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2018-09-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-20
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.
Affected configurations
• powerdns dnsdist (<= 1.2.0)
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- http://www.securityfocus.com/bid/100509 Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069 Issue Tracking, Third Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html Patch, Vendor Advisory
- http://www.securityfocus.com/bid/100509 Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069 Issue Tracking, Third Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html Patch, Vendor Advisory