gsd-2020-14310
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-14310",
"description": "There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn\u0027t verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.",
"id": "GSD-2020-14310",
"references": [
"https://www.suse.com/security/cve/CVE-2020-14310.html",
"https://www.debian.org/security/2020/dsa-4735",
"https://access.redhat.com/errata/RHSA-2020:3276",
"https://access.redhat.com/errata/RHSA-2020:3275",
"https://access.redhat.com/errata/RHSA-2020:3274",
"https://access.redhat.com/errata/RHSA-2020:3273",
"https://access.redhat.com/errata/RHSA-2020:3271",
"https://access.redhat.com/errata/RHSA-2020:3227",
"https://access.redhat.com/errata/RHSA-2020:3223",
"https://access.redhat.com/errata/RHSA-2020:3217",
"https://access.redhat.com/errata/RHSA-2020:3216",
"https://ubuntu.com/security/CVE-2020-14310",
"https://advisories.mageia.org/CVE-2020-14310.html",
"https://linux.oracle.com/cve/CVE-2020-14310.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-14310"
],
"details": "There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn\u0027t verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.",
"id": "GSD-2020-14310",
"modified": "2023-12-13T01:22:00.205375Z",
"schema_version": "1.4.0"
}
},
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"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "grub2",
"version": {
"version_data": [
{
"version_value": "2.06"
}
]
}
}
]
},
"vendor_name": "The Grub2 Project"
}
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"value": "There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn\u0027t verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow."
}
]
},
"impact": {
"cvss": [
[
{
"vectorString": "5.7/CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H",
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},
{
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"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4432-1/"
},
{
"name": "openSUSE-SU-2020:1169",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"
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"url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"
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"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 3.6,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "LOW",
"userInteractionRequired": false
},
"baseMetricV3": {
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 0.8,
"impactScore": 5.2
}
},
"lastModifiedDate": "2021-10-19T13:19Z",
"publishedDate": "2020-07-31T22:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.