Buffer overflow in Gnu Grub2
CVE-2022-28734
Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP…
Vulnerability class: Buffer Overflow
EPSS: 0.011 (62.9th 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
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 (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-28734?
- CVE-2022-28734 is a high-severity vulnerability in Gnu Grub2, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2023-07-20.
- How severe is CVE-2022-28734?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-28734 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.