CVE-2016-7069
Published: 11 September 2018
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
dnsdist Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1.2.0-1)
|
| bionic |
Not vulnerable
(1.2.0-1)
|
|
| cosmic |
Not vulnerable
(1.2.0-1)
|
|
| disco |
Not vulnerable
(1.2.0-1)
|
|
| eoan |
Not vulnerable
(1.2.0-1)
|
|
| focal |
Not vulnerable
(1.2.0-1)
|
|
| groovy |
Not vulnerable
(1.2.0-1)
|
|
| hirsute |
Not vulnerable
(1.2.0-1)
|
|
| impish |
Not vulnerable
(1.2.0-1)
|
|
| jammy |
Not vulnerable
(1.2.0-1)
|
|
| kinetic |
Not vulnerable
(1.2.0-1)
|
|
| lunar |
Not vulnerable
(1.2.0-1)
|
|
| mantic |
Not vulnerable
(1.2.0-1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(1.2.0-1)
|
|
| xenial |
Needed
|
|
| zesty |
Ignored
(end of life)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |