MSRC_CVE-2022-33633

Vulnerability from csaf_microsoft - Published: 2022-07-12 07:00 - Updated: 2022-07-12 07:00
Summary
Skype for Business and Lync Remote Code Execution Vulnerability
Severity
Important
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.
CVE-2022-33633
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Product Identifier Version Remediation
Microsoft Lync Server 2013 CU10 8308.1198
Microsoft Lync Server 2013 CU10
 8308.1198
Skype for Business Server 2015 CU12 9319.634
Skype for Business Server 2015 CU12
 9319.634
Skype for Business Server 2019 CU6 2046.404
Skype for Business Server 2019 CU6
 2046.404
Product Identifier Version Remediation
Skype for Business Server 2019 CU6 <2046.404
Skype for Business Server 2019 CU6
 <2046.404
Vendor Fix fix
Skype for Business Server 2015 CU12 <9319.634
Skype for Business Server 2015 CU12
 <9319.634
Vendor Fix fix
Microsoft Lync Server 2013 CU10 <8308.1198
Microsoft Lync Server 2013 CU10
 <8308.1198
Vendor Fix fix
Threats
Impact Remote Code Execution
Exploit Status Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely
References
Acknowledgments
Yiming Xiang with <a href="https://www.nsfocus.cn/">NSFOCUS TIANJI LAB</a>
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Yiming Xiang with \u003ca href=\"https://www.nsfocus.cn/\"\u003eNSFOCUS TIANJI LAB\u003c/a\u003e"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "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"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2022-33633 Skype for Business and Lync Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-33633"
      },
      {
        "category": "self",
        "summary": "CVE-2022-33633 Skype for Business and Lync Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2022/msrc_cve-2022-33633.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "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": "Skype for Business and Lync Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2022-07-12T07:00:00.000Z",
      "generator": {
        "date": "2025-07-08T15:35:53.971Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2022-33633",
      "initial_release_date": "2022-07-12T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2022-07-12T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c8308.1198",
            "product": {
              "name": "Microsoft Lync Server 2013 CU10 \u003c8308.1198",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "8308.1198",
            "product": {
              "name": "Microsoft Lync Server 2013 CU10 8308.1198",
              "product_id": "11892"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Lync Server 2013 CU10"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c9319.634",
            "product": {
              "name": "Skype for Business Server 2015 CU12 \u003c9319.634",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "9319.634",
            "product": {
              "name": "Skype for Business Server 2015 CU12 9319.634",
              "product_id": "12025"
            }
          }
        ],
        "category": "product_name",
        "name": "Skype for Business Server 2015 CU12"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c2046.404",
            "product": {
              "name": "Skype for Business Server 2019 CU6 \u003c2046.404",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "2046.404",
            "product": {
              "name": "Skype for Business Server 2019 CU6 2046.404",
              "product_id": "12026"
            }
          }
        ],
        "category": "product_name",
        "name": "Skype for Business Server 2019 CU6"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-33633",
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "To successfully exploit this vulnerability, the attacker must have write access on the file share, and an active file share administrator account on the target\nserver.  With write access, the attacker would need to modify specific files on the target server to trigger code execution.",
          "title": "According to the CVSS metric, privileges required is high (PR:H). What privileges are needed by the attacker and how are they used in the context of the remote code execution?"
        }
      ],
      "product_status": {
        "fixed": [
          "11892",
          "12025",
          "12026"
        ],
        "known_affected": [
          "1",
          "2",
          "3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-33633 Skype for Business and Lync Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-33633"
        },
        {
          "category": "self",
          "summary": "CVE-2022-33633 Skype for Business and Lync Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2022/msrc_cve-2022-33633.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-07-12T07:00:00.000Z",
          "details": "8308.1198:Security Update:https://support.microsoft.com/help/5016714",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5016714"
        },
        {
          "category": "vendor_fix",
          "date": "2022-07-12T07:00:00.000Z",
          "details": "9319.634:Security Update:https://support.microsoft.com/help/5016714",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5016714"
        },
        {
          "category": "vendor_fix",
          "date": "2022-07-12T07:00:00.000Z",
          "details": "2046.404:Security Update:https://support.microsoft.com/help/5016714",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/help/5016714"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Skype for Business and Lync Remote Code Execution Vulnerability"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.