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.
Ссылки
- Third Party AdvisoryVDB Entry
- Issue TrackingThird Party Advisory
- PatchVendor Advisory
- Third Party AdvisoryVDB Entry
- Issue TrackingThird Party Advisory
- PatchVendor Advisory
Уязвимые конфигурации
EPSS
5.9 Medium
CVSS3
7.5 High
CVSS3
5 Medium
CVSS2
Дефекты
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.
EPSS
5.9 Medium
CVSS3
7.5 High
CVSS3
5 Medium
CVSS2