| Titre | D-Link DIR822A_101 A_101 Stack-based Buffer Overflow |
|---|
| Description | A stack-based buffer overflow vulnerability exists in the `udhcpcd` DHCP server of D-Link DIR-822A. The issue is located in the TR-111 parsing routine for DHCP vendor-specific option 125, where attacker-controlled suboption data is copied into fixed-size stack buffers using `strcpy()` even though the source data is length-delimited DHCP option content rather than a NUL-terminated C string.
Because the vulnerable path is reachable from unauthenticated DHCP client traffic on the local network, a remote attacker on the LAN can trigger memory corruption by sending a crafted DHCP message containing a malicious option 125 payload. |
|---|
| La source | ⚠️ https://tzh00203.notion.site/D-Link-DIR-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e7c7c68f0 |
|---|
| Utilisateur | tian (UID 93438) |
|---|
| Soumission | 27/07/2026 11:27 (il y a 1 mois) |
|---|
| Modérer | 06/09/2026 18:15 (1 month later) |
|---|
| Statut | Accepté |
|---|
| Entrée VulDB | 399458 [D-Link DIR-822A A_101 udhcpcd udhcpcd/serverpacket.c strcpy buffer overflow] |
|---|
| Points | 17 |
|---|