Vulnerabilities > CVE-2022-28733 - Integer Underflow (Wrap or Wraparound) vulnerability in GNU Grub2
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 5 |