In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case In decode_int(), the CONS case calls get_bits(bs, 2) to read a length value, then calls get_uint(bs, len) without checking that len bytes remain in the buffer. The existing boundary check only validates the 2 bits for get_bits(), not the subsequent 1-4 bytes that get_uint() reads. This allows a malformed H.323/RAS packet to cause a 1-4 byte slab-out-of-bounds read. Add a boundary check for len bytes after get_bits() and before get_uint().
En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: netfilter: nf_conntrack_h323: corrección de lectura fuera de límites (OOB) en el caso CONS de decode_int() En decode_int(), el caso CONS llama a get_bits(bs, 2) para leer un valor de longitud, luego llama a get_uint(bs, len) sin comprobar que len bytes permanezcan en el búfer. La comprobación de límites existente solo valida los 2 bits para get_bits(), no los 1-4 bytes subsiguientes que lee get_uint(). Esto permite que un paquete H.323/RAS malformado cause una lectura fuera de límites de slab de 1-4 bytes. Añadir una comprobación de límites para len bytes después de get_bits() y antes de get_uint().
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | LOW |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Type: Secondary
Exploitability Score: 3.9
Impact Score: 4.2
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-125
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d242456c800> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2364a4e980> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2364a4e600> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d24243dd800> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d242456f200> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d242456f900> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2357b4f7c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d2364a4e400> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d2364a4e480> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d242456db40> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d2364a4e340> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* |