ghsa-8h84-vmjf-pcmj
Vulnerability from github
Published
2022-12-19 21:30
Modified
2022-12-28 21:30
Severity
Details
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.
{
"affected": [],
"aliases": [
"CVE-2022-3775"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-19T20:15:00Z",
"severity": "HIGH"
},
"details": "When rendering certain unicode sequences, grub2\u0027s font code doesn\u0027t proper validate if the informed glyph\u0027s 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\u0027s heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.",
"id": "GHSA-8h84-vmjf-pcmj",
"modified": "2022-12-28T21:30:21Z",
"published": "2022-12-19T21:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3775"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/cve-2022-3775"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202311-14"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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