Vulnerability Details : CVE-2022-3775
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
Vulnerability category: Memory Corruption
Products affected by CVE-2022-3775
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-3775
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 13 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-3775
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
1.8
|
5.2
|
NIST | |
|
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
N/A
|
N/A
|
MS-CVE-2022-3775 | 2024-08-13 |
CWE ids for CVE-2022-3775
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: secalert@redhat.com (Primary)
References for CVE-2022-3775
-
https://access.redhat.com/security/cve/cve-2022-3775
CVE-2022-3775- Red Hat Customer PortalThird Party Advisory
-
https://security.gentoo.org/glsa/202311-14
GRUB: Multiple Vulnerabilities (GLSA 202311-14) — Gentoo security
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