ESEA-2023:0073
Vulnerability from csaf_opensuse - Published: 2023-02-21 09:01 - Updated: 2026-09-20 10:50Summary
Enhancement update for
Severity
Moderate
Notes
Title of the patch: Enhancement update for
Description of the patch:
grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass (CVE-2022-2601)
grub2: Heap based out-of-bounds write when redering certain unicode sequences (CVE-2022-3775)
Patchnames: ESEA-2023:0073
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
6.4 (Medium)
Affected products
Recommended
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Liberty Linux 8:grub2-common-1:2.02-142.el8_7.2.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-efi-ia32-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-efi-ia32-cdboot-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-efi-ia32-modules-1:2.02-142.el8_7.2.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-efi-x64-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-efi-x64-cdboot-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-efi-x64-modules-1:2.02-142.el8_7.2.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-pc-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-pc-modules-1:2.02-142.el8_7.2.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-tools-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-tools-efi-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-tools-extra-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:grub2-tools-minimal-1:2.02-142.el8_7.2.x86_64 | — |
Vendor Fix
|
Threats
Impact
moderate
6.4 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2022-2601
Threats
Impact
moderate
References
8 references
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"vulnerabilities": [
{
"cve": "CVE-2022-2601",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2022-2601"
}
],
"notes": [
{
"category": "general",
"text": "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.",
"title": "CVE description"
}
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{
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"summary": "SUSE Bug 1205178 for CVE-2022-2601",
"url": "https://bugzilla.suse.com/1205178"
}
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"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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"SUSE Liberty Linux 8:grub2-efi-x64-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-x64-cdboot-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-pc-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-pc-modules-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-tools-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-efi-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-extra-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-minimal-1:2.02-142.el8_7.2.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:grub2-common-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-efi-ia32-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-ia32-cdboot-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-ia32-modules-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-efi-x64-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-x64-cdboot-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-x64-modules-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-pc-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-pc-modules-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-tools-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-efi-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-extra-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-minimal-1:2.02-142.el8_7.2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2023-02-21T09:01:34Z",
"details": "moderate"
}
],
"title": "CVE-2022-2601"
},
{
"cve": "CVE-2022-3775",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2022-3775"
}
],
"notes": [
{
"category": "general",
"text": "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.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:grub2-common-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-efi-ia32-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-ia32-cdboot-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-ia32-modules-1:2.02-142.el8_7.2.noarch",
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"SUSE Liberty Linux 8:grub2-pc-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-tools-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-tools-minimal-1:2.02-142.el8_7.2.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2022-3775",
"url": "https://www.suse.com/security/cve/CVE-2022-3775"
},
{
"category": "external",
"summary": "SUSE Bug 1205182 for CVE-2022-3775",
"url": "https://bugzilla.suse.com/1205182"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:grub2-common-1:2.02-142.el8_7.2.noarch",
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"SUSE Liberty Linux 8:grub2-efi-ia32-cdboot-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-efi-x64-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-efi-x64-cdboot-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-pc-1:2.02-142.el8_7.2.x86_64",
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]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:grub2-common-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-efi-ia32-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-efi-ia32-modules-1:2.02-142.el8_7.2.noarch",
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"SUSE Liberty Linux 8:grub2-efi-x64-modules-1:2.02-142.el8_7.2.noarch",
"SUSE Liberty Linux 8:grub2-pc-1:2.02-142.el8_7.2.x86_64",
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"SUSE Liberty Linux 8:grub2-tools-1:2.02-142.el8_7.2.x86_64",
"SUSE Liberty Linux 8:grub2-tools-efi-1:2.02-142.el8_7.2.x86_64",
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]
}
],
"threats": [
{
"category": "impact",
"date": "2023-02-21T09:01:34Z",
"details": "moderate"
}
],
"title": "CVE-2022-3775"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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