Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| artful | not-affected | 1.2.0-1 |
| bionic | not-affected | 1.2.0-1 |
| cosmic | not-affected | 1.2.0-1 |
| devel | not-affected | 1.2.0-1 |
| disco | not-affected | 1.2.0-1 |
| eoan | not-affected | 1.2.0-1 |
| esm-apps/bionic | not-affected | 1.2.0-1 |
| esm-apps/focal | not-affected | 1.2.0-1 |
| esm-apps/jammy | not-affected | 1.2.0-1 |
| esm-apps/noble | not-affected | 1.2.0-1 |
Показывать по
5 Medium
CVSS2
5.9 Medium
CVSS3
Связанные уязвимости
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.
An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT r ...
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.
5 Medium
CVSS2
5.9 Medium
CVSS3