CVE-2016-7069
Last modified
CVE-2016-7069 is a vulnerability of currently unknown severity. 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. EPSS estimates a 4.54% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Dnsdist | <= 1.2.0 |
References
- http://www.securityfocus.com/bid/100509Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069Issue Tracking, Third Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.htmlPatch, Vendor Advisory
- http://www.securityfocus.com/bid/100509Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069Issue Tracking, Third Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.htmlPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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