msrc_cve-2021-42374
Vulnerability from csaf_microsoft
Published
2021-11-02 00:00
Modified
2021-12-16 00:00
Summary
An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that
Notes
Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
{
"document": {
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2021-42374 An out-of-bounds heap read in Busybox\u0027s unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-42374.json"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "An out-of-bounds heap read in Busybox\u0027s unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that",
"tracking": {
"current_release_date": "2021-12-16T00:00:00.000Z",
"generator": {
"date": "2025-10-19T22:19:06.417Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2021-42374",
"initial_release_date": "2021-11-02T00:00:00.000Z",
"revision_history": [
{
"date": "2021-11-18T00:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2021-12-16T00:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Added busybox to CBL-Mariner 2.0"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "1.0",
"product": {
"name": "CBL Mariner 1.0",
"product_id": "16820"
}
},
{
"category": "product_version",
"name": "2.0",
"product": {
"name": "CBL Mariner 2.0",
"product_id": "17086"
}
},
{
"category": "product_version",
"name": "3.0",
"product": {
"name": "Azure Linux 3.0",
"product_id": "17084"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccm1 busybox 1.34.1-1",
"product": {
"name": "\u003ccm1 busybox 1.34.1-1",
"product_id": "4"
}
},
{
"category": "product_version",
"name": "cm1 busybox 1.34.1-1",
"product": {
"name": "cm1 busybox 1.34.1-1",
"product_id": "18965"
}
},
{
"category": "product_version_range",
"name": "\u003ccbl2 busybox 1.35.0-1",
"product": {
"name": "\u003ccbl2 busybox 1.35.0-1",
"product_id": "3"
}
},
{
"category": "product_version",
"name": "cbl2 busybox 1.35.0-1",
"product": {
"name": "cbl2 busybox 1.35.0-1",
"product_id": "18966"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 busybox 1.35.1-1",
"product": {
"name": "\u003cazl3 busybox 1.35.1-1",
"product_id": "2"
}
},
{
"category": "product_version",
"name": "azl3 busybox 1.35.1-1",
"product": {
"name": "azl3 busybox 1.35.1-1",
"product_id": "18967"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 busybox 1.36.1-12",
"product": {
"name": "\u003cazl3 busybox 1.36.1-12",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "azl3 busybox 1.36.1-12",
"product": {
"name": "azl3 busybox 1.36.1-12",
"product_id": "19943"
}
}
],
"category": "product_name",
"name": "busybox"
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccm1 busybox 1.34.1-1 as a component of CBL Mariner 1.0",
"product_id": "16820-4"
},
"product_reference": "4",
"relates_to_product_reference": "16820"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cm1 busybox 1.34.1-1 as a component of CBL Mariner 1.0",
"product_id": "18965-16820"
},
"product_reference": "18965",
"relates_to_product_reference": "16820"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccbl2 busybox 1.35.0-1 as a component of CBL Mariner 2.0",
"product_id": "17086-3"
},
"product_reference": "3",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cbl2 busybox 1.35.0-1 as a component of CBL Mariner 2.0",
"product_id": "18966-17086"
},
"product_reference": "18966",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003cazl3 busybox 1.35.1-1 as a component of Azure Linux 3.0",
"product_id": "17084-2"
},
"product_reference": "2",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 busybox 1.35.1-1 as a component of Azure Linux 3.0",
"product_id": "18967-17084"
},
"product_reference": "18967",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003cazl3 busybox 1.36.1-12 as a component of Azure Linux 3.0",
"product_id": "17084-1"
},
"product_reference": "1",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 busybox 1.36.1-12 as a component of Azure Linux 3.0",
"product_id": "19943-17084"
},
"product_reference": "19943",
"relates_to_product_reference": "17084"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-42374",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"notes": [
{
"category": "general",
"text": "JFROG",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"18965-16820",
"18966-17086",
"18967-17084",
"19943-17084"
],
"known_affected": [
"16820-4",
"17086-3",
"17084-2",
"17084-1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2021-42374 An out-of-bounds heap read in Busybox\u0027s unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-42374.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2021-11-18T00:00:00.000Z",
"details": "1.34.1-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"16820-4"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2021-11-18T00:00:00.000Z",
"details": "1.35.0-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-3"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2021-11-18T00:00:00.000Z",
"details": "1.35.1-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17084-2"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2021-11-18T00:00:00.000Z",
"details": "Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17084-1"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"environmentalsScore": 0.0,
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"temporalScore": 5.3,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"products": [
"16820-4",
"17086-3",
"17084-2",
"17084-1"
]
}
],
"title": "An out-of-bounds heap read in Busybox\u0027s unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that"
}
]
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…