CVE-2022-28733 is an integer underflow vulnerability in the grub_net_recv_ip4_packets function of GNU GRUB2. A specially crafted IP packet can cause the rsm->total_len value to wrap around, leading to a small integer for memory allocation and subsequent out-of-bounds writes. This vulnerability has a CVSS score of 8.1 (HIGH), indicating a network-based attack with high impact on confidentiality, integrity, and availability, but with high attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.00, < 2.06-3CPE matchmatch criteria | cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.