Vulnerability Name:

CVE-2018-8546 (CCN-152238)

Assigned:2018-11-13
Published:2018-11-13
Updated:2020-08-24
Summary:A denial of service vulnerability exists in Skype for Business, aka "Microsoft Skype for Business Denial of Service Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Lync, Skype.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-8546

Source: BID
Type: Third Party Advisory, VDB Entry
105802

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1042125

Source: XF
Type: UNKNOWN
ms-skype-cve20188546-dos(152238)

Source: CCN
Type: Packet Storm Security [11-21-2018]
Microsoft Skype 2015 / 2016 Denial Of Service

Source: CCN
Type: Microsoft Security TechCenter - November 2018
Microsoft Skype for Business Denial of Service Vulnerability

Source: CONFIRM
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8546

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:lync:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:lync_basic:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:office:2019:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:office_365_proplus:-:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:skype_for_business:2016:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:skype_for_business_basic:2016:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:microsoft:lync:2013:sp1:*:*:*:*:x64:*
  • OR cpe:/a:microsoft:lync_basic:2013:sp1:*:*:*:*:x64:*
  • OR cpe:/a:microsoft:office:2019:*:~~~click-to-run~~:*:*:*:x32:*
  • OR cpe:/a:microsoft:office:2019:*:*:*:click-to-run:*:x64:*
  • OR cpe:/a:microsoft:office_365_proplus:-:*:*:*:*:*:x32:*
  • OR cpe:/a:microsoft:office_365_proplus:-:*:*:*:*:*:x64:*

    • * Denotes that component is vulnerable
    BACK
    microsoft lync 2013 sp1
    microsoft lync basic 2013 sp1
    microsoft office 2019
    microsoft office 365 proplus -
    microsoft skype for business 2016
    microsoft skype for business basic 2016
    microsoft lync 2013 sp1
    microsoft lync basic 2013 sp1
    microsoft office 2019
    microsoft office 2019
    microsoft office 365 proplus -
    microsoft office 365 proplus -