msrc_cve-2023-33151
Vulnerability from csaf_microsoft
Published
2023-07-11 07:00
Modified
2023-07-21 07:00
Summary
Microsoft Outlook Spoofing Vulnerability
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.
Customer Action
Required. The vulnerability documented by this CVE requires customer action to resolve.
{
"document": {
"acknowledgments": [
{
"names": [
"Jordan Hopkins - Rootshell Security"
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"aggregate_severity": {
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"notes": [
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"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"
},
{
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"text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
"title": "Customer Action"
}
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"publisher": {
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"name": "Microsoft Security Response Center",
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33151"
},
{
"category": "self",
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"url": "https://msrc.microsoft.com/csaf/2023/msrc_cve-2023-33151.json"
},
{
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"summary": "Microsoft Exploitability Index",
"url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
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{
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"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
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{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
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],
"title": "Microsoft Outlook Spoofing Vulnerability",
"tracking": {
"current_release_date": "2023-07-21T07:00:00.000Z",
"generator": {
"date": "2025-01-01T01:51:50.798Z",
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"version": "1.0"
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"initial_release_date": "2023-07-11T07:00:00.000Z",
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{
"date": "2023-07-11T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
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{
"date": "2023-07-21T07:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Added an FAQ to explain what customers should do if they run into issues opening UNC, SMB, and file:// type URLs after installing the July 2023 Outlook updates. This is an informational change only."
}
],
"status": "final",
"version": "2"
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"vulnerabilities": [
{
"cve": "CVE-2023-33151",
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "The user would have to click on a specially crafted URL to be compromised by the attacker.",
"title": "According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?"
},
{
"category": "faq",
"text": "Yes. The Preview Pane is an attack vector, but additional user interaction is required.",
"title": "Is the Preview Pane an attack vector for this vulnerability?"
},
{
"category": "faq",
"text": "Exploiting this vulnerability could allow the disclosure of NetNTLMv2 hashes.",
"title": "What type of information could be disclosed by this vulnerability?"
},
{
"category": "faq",
"text": "The July 2023 Outlook security updates limit access to UNC, SMB, and file:// type URLs to only those the system identifies as Local, Intranet, or Trusted Sites. Additionally, when you click a link for one of these UNC, SMB, or file:// type URLs, a confirmation dialog will be displayed. To ensure continued access, add the URL, UNC, or FQDN path to the Trusted Site Zone as described in Intranet site is identified as Internet site - Windows Client | Microsoft Learn.\nFor more information see Outlook blocks opening FQDN and IP address hyperlinks after installing protections for Microsoft Outlook Security Feature Bypass Vulnerability released July 11, 2023.",
"title": "After I installed the July 2023 security updates for Outlook, I can no longer access UNC, SMB, or file:// type URLs from my Outlook. How do I prevent this from happening?"
}
],
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33151"
},
{
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33151"
}
],
"remediations": [
{
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"date": "2023-07-11T07:00:00.000Z",
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},
{
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{
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"url": "https://support.microsoft.com/help/5002427"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 5.7,
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
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}
],
"threats": [
{
"category": "impact",
"details": "Spoofing"
},
{
"category": "exploit_status",
"details": "Exploited:No;Latest Software Release:Exploitation Less Likely"
}
],
"title": "Microsoft Outlook Spoofing Vulnerability"
}
]
}
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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.
- 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.