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.
References
| Link | Resource |
|---|---|
| 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 |
Configurations
History
21 Nov 2024, 02:57
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 5.0
v3 : 5.9 |
| References | () http://www.securityfocus.com/bid/100509 - Third Party Advisory, VDB Entry | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069 - Issue Tracking, Third Party Advisory | |
| References | () https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html - Patch, Vendor Advisory |
Information
Published : 2018-09-11 13:29
Updated : 2024-11-21 02:57
NVD link : CVE-2016-7069
Mitre link : CVE-2016-7069
CVE.ORG link : CVE-2016-7069
JSON object : View
Products Affected
powerdns
- dnsdist
CWE
CWE-20
Improper Input Validation