msrc_cve-2024-45490
Vulnerability from csaf_microsoft
Published
2024-08-02 00:00
Modified
2025-03-14 00:00
Summary
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
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": {
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"csaf_version": "2.0",
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"tlp": {
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"notes": [
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"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": {
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"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2024-45490 An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer. - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-45490.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 issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.",
"tracking": {
"current_release_date": "2025-03-14T00:00:00.000Z",
"generator": {
"date": "2025-10-20T02:00:16.313Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2024-45490",
"initial_release_date": "2024-08-02T00:00:00.000Z",
"revision_history": [
{
"date": "2024-09-13T00:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2024-10-15T00:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Added expat to Azure Linux 3.0\nAdded expat to CBL-Mariner 2.0"
},
{
"date": "2024-10-18T00:00:00.000Z",
"legacy_version": "1.2",
"number": "3",
"summary": "Added expat to CBL-Mariner 2.0\nAdded expat to Azure Linux 3.0"
},
{
"date": "2025-03-14T00:00:00.000Z",
"legacy_version": "1.3",
"number": "4",
"summary": "Added python3 to Azure Linux 3.0\nAdded expat to Azure Linux 3.0\nAdded expat to CBL-Mariner 2.0"
}
],
"status": "final",
"version": "4"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "2.0",
"product": {
"name": "CBL Mariner 2.0",
"product_id": "17086"
}
},
{
"category": "product_version",
"name": "3.0",
"product": {
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"product_id": "17084"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccbl2 expat 2.6.3-1",
"product": {
"name": "\u003ccbl2 expat 2.6.3-1",
"product_id": "8"
}
},
{
"category": "product_version",
"name": "cbl2 expat 2.6.3-1",
"product": {
"name": "cbl2 expat 2.6.3-1",
"product_id": "17243"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 expat 2.6.3-1",
"product": {
"name": "\u003cazl3 expat 2.6.3-1",
"product_id": "5"
}
},
{
"category": "product_version",
"name": "azl3 expat 2.6.3-1",
"product": {
"name": "azl3 expat 2.6.3-1",
"product_id": "17641"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 expat 2.6.2-1",
"product": {
"name": "\u003cazl3 expat 2.6.2-1",
"product_id": "4"
}
},
{
"category": "product_version",
"name": "azl3 expat 2.6.2-1",
"product": {
"name": "azl3 expat 2.6.2-1",
"product_id": "17783"
}
},
{
"category": "product_version_range",
"name": "\u003ccbl2 expat 2.6.2-2",
"product": {
"name": "\u003ccbl2 expat 2.6.2-2",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "cbl2 expat 2.6.2-2",
"product": {
"name": "cbl2 expat 2.6.2-2",
"product_id": "20147"
}
}
],
"category": "product_name",
"name": "expat"
},
{
"category": "product_name",
"name": "azl3 python3 3.12.3-5",
"product": {
"name": "azl3 python3 3.12.3-5",
"product_id": "6"
}
},
{
"category": "product_name",
"name": "cbl2 cmake 3.21.4-17",
"product": {
"name": "cbl2 cmake 3.21.4-17",
"product_id": "2"
}
},
{
"category": "product_name",
"name": "azl3 cmake 3.30.3-6",
"product": {
"name": "azl3 cmake 3.30.3-6",
"product_id": "7"
}
},
{
"category": "product_name",
"name": "cbl2 python3 3.9.19-13",
"product": {
"name": "cbl2 python3 3.9.19-13",
"product_id": "3"
}
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccbl2 expat 2.6.3-1 as a component of CBL Mariner 2.0",
"product_id": "17086-8"
},
"product_reference": "8",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cbl2 expat 2.6.3-1 as a component of CBL Mariner 2.0",
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{
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},
{
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},
"product_reference": "17641",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
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"product_id": "17084-4"
},
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{
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},
{
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},
"product_reference": "1",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
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"product_id": "20147-17086"
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"product_reference": "20147",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
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"product_id": "17084-6"
},
"product_reference": "6",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
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"product_id": "17086-2"
},
"product_reference": "2",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
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"product_id": "17084-7"
},
"product_reference": "7",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
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"product_id": "17086-3"
},
"product_reference": "3",
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},
"vulnerabilities": [
{
"cve": "CVE-2024-45490",
"cwe": {
"id": "CWE-611",
"name": "Improper Restriction of XML External Entity Reference"
},
"flags": [
{
"label": "vulnerable_code_not_in_execute_path",
"product_ids": [
"17084-6",
"17086-2",
"17084-7",
"17086-3"
]
}
],
"notes": [
{
"category": "general",
"text": "mitre",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"17243-17086",
"17641-17084",
"17783-17084",
"20147-17086"
],
"known_affected": [
"17086-8",
"17084-5",
"17084-4",
"17086-1"
],
"known_not_affected": [
"17084-6",
"17086-2",
"17084-7",
"17086-3"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2024-45490 An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer. - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-45490.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2024-09-13T00:00:00.000Z",
"details": "2.6.3-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-8",
"17084-5",
"17084-4",
"17086-1"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"environmentalsScore": 0.0,
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 7.5,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"17086-8",
"17084-5",
"17084-4",
"17086-1"
]
}
],
"title": "An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer."
}
]
}
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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.
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