gsd-2022-2601
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-2601",
"description": "A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.",
"id": "GSD-2022-2601",
"references": [
"https://www.debian.org/security/2022/dsa-5280",
"https://access.redhat.com/errata/RHSA-2022:8494",
"https://access.redhat.com/errata/RHSA-2022:8800",
"https://access.redhat.com/errata/RHSA-2022:8978",
"https://access.redhat.com/errata/RHSA-2023:0047",
"https://access.redhat.com/errata/RHSA-2023:0048",
"https://access.redhat.com/errata/RHSA-2023:0049",
"https://www.suse.com/security/cve/CVE-2022-2601.html",
"https://access.redhat.com/errata/RHSA-2023:0752"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.",
"id": "GSD-2022-2601",
"modified": "2023-12-13T01:19:20.189496Z",
"schema_version": "1.4.0"
}
},
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"affects": {
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{
"product": {
"product_data": [
{
"product_name": "grub2",
"version": {
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"version_value": "grub2 2.06 and lower"
}
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}
]
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"problemtype": {
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"references": {
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},
{
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},
"impact": {
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 6.0
}
},
"lastModifiedDate": "2023-11-25T12:15Z",
"publishedDate": "2022-12-14T21:15Z"
}
}
}
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