Integer overflow in Gnu Grub2
CVE-2022-28733
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 wrap…
EPSS: 0.013 (66.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Gnu Grub2
- Gnu Project Grub — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (mailing-list, Mailing List, Third Party Advisory)
- security@ubuntu.com (issue-tracking, Third Party Advisory)
- security@ubuntu.com
Frequently asked questions
- What is CVE-2022-28733?
- CVE-2022-28733 is a high-severity vulnerability in Gnu Grub2, classified under Integer Underflow. CVSS score: 8.1/10. Published 2023-07-20.
- How severe is CVE-2022-28733?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-28733 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.