msrc_cve-2023-45322
Vulnerability from csaf_microsoft
Published
2023-10-01 00:00
Modified
2025-01-30 00:00
Summary
libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when memory allocations fail."
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/"
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"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-2023-45322 libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor\u0027s position is \"I don\u0027t think these issues are critical enough to warrant a CVE ID ... because an attacker typically can\u0027t control when memory allocations fail.\" - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-45322.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": "libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor\u0027s position is \"I don\u0027t think these issues are critical enough to warrant a CVE ID ... because an attacker typically can\u0027t control when memory allocations fail.\"",
"tracking": {
"current_release_date": "2025-01-30T00:00:00.000Z",
"generator": {
"date": "2025-10-20T00:44:26.420Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2023-45322",
"initial_release_date": "2023-10-01T00:00:00.000Z",
"revision_history": [
{
"date": "2023-10-12T00:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2025-01-30T00:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Added libxml2 to Azure Linux 3.0\nAdded libxml2 to CBL-Mariner 2.0"
}
],
"status": "final",
"version": "2"
}
},
"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": {
"name": "Azure Linux 3.0",
"product_id": "17084"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccbl2 libxml2 2.10.4-2",
"product": {
"name": "\u003ccbl2 libxml2 2.10.4-2",
"product_id": "2"
}
},
{
"category": "product_version",
"name": "cbl2 libxml2 2.10.4-2",
"product": {
"name": "cbl2 libxml2 2.10.4-2",
"product_id": "18293"
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},
{
"category": "product_version_range",
"name": "\u003cazl3 libxml2 2.11.5-3",
"product": {
"name": "\u003cazl3 libxml2 2.11.5-3",
"product_id": "3"
}
},
{
"category": "product_version",
"name": "azl3 libxml2 2.11.5-3",
"product": {
"name": "azl3 libxml2 2.11.5-3",
"product_id": "17739"
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},
{
"category": "product_version_range",
"name": "\u003cazl3 libxml2 2.11.5-5",
"product": {
"name": "\u003cazl3 libxml2 2.11.5-5",
"product_id": "1"
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},
{
"category": "product_version",
"name": "azl3 libxml2 2.11.5-5",
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}
],
"category": "product_name",
"name": "libxml2"
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
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"category": "default_component_of",
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"name": "\u003ccbl2 libxml2 2.10.4-2 as a component of CBL Mariner 2.0",
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},
"product_reference": "2",
"relates_to_product_reference": "17086"
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{
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{
"category": "default_component_of",
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{
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{
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},
"product_reference": "1",
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},
{
"category": "default_component_of",
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},
"product_reference": "19447",
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},
"vulnerabilities": [
{
"cve": "CVE-2023-45322",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"notes": [
{
"category": "general",
"text": "mitre",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"18293-17086",
"17739-17084",
"19447-17084"
],
"known_affected": [
"17086-2",
"17084-3",
"17084-1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2023-45322 libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor\u0027s position is \"I don\u0027t think these issues are critical enough to warrant a CVE ID ... because an attacker typically can\u0027t control when memory allocations fail.\" - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-45322.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2023-10-12T00:00:00.000Z",
"details": "2.10.4-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-2"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2023-10-12T00:00:00.000Z",
"details": "2.11.5-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17084-3",
"17084-1"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"environmentalsScore": 0.0,
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 6.5,
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"17086-2",
"17084-3",
"17084-1"
]
}
],
"title": "libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor\u0027s position is \"I don\u0027t think these issues are critical enough to warrant a CVE ID ... because an attacker typically can\u0027t control when memory allocations fail.\""
}
]
}
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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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