Vulnerability Name:

CVE-2018-8517 (CCN-153391)

Assigned:2018-12-11
Published:2018-12-11
Updated:2020-09-28
Summary:A denial of service vulnerability exists when .NET Framework improperly handles special web requests, aka ".NET Framework Denial Of Service Vulnerability." This affects Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/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): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 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:H/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): High
CVSS v2 Severity:5.0 Medium (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
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-8517

Source: BID
Type: Third Party Advisory, VDB Entry
106075

Source: XF
Type: UNKNOWN
ms-dotnet-cve20188517-dos(153391)

Source: CCN
Type: Microsoft Security TechCenter - December 2018
.NET Framework Denial Of Service Vulnerability

Source: CONFIRM
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8517

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1703:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1709:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_1709:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:microsoft:.net_framework:3.5:sp1:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1703:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1703:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1709:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_1709:-:*:*:*:*:*:x64:*

    • Configuration 10:
  • cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1703:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1709:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:pro_n:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_1709:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:-:*:-:-:x32:*
  • OR cpe:/o:microsoft:windows_7:*:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
  • OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*
  • OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_10:*:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1709:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:arm64:*

    • * Denotes that component is vulnerable
    BACK
    microsoft .net framework 3.5
    microsoft windows 10 1607
    microsoft windows 10 1703
    microsoft windows 10 1709
    microsoft windows 10 1803
    microsoft windows 10 1809
    microsoft windows 8.1 -
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft windows server 2016 -
    microsoft windows server 2016 1709
    microsoft windows server 2016 1803
    microsoft windows server 2019 -
    microsoft .net framework 3.5 sp1
    microsoft windows server 2008 - sp2
    microsoft .net framework 3.5.1
    microsoft windows 7 - sp1
    microsoft windows server 2008 r2 sp1
    microsoft .net framework 4.5.2
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 - sp2
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft .net framework 4.6.2
    microsoft windows 10 1607
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft windows server 2016 -
    microsoft .net framework 4.6
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 - sp2
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft .net framework 4.6.1
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft .net framework 4.7
    microsoft windows 10 1607
    microsoft windows 10 1703
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft windows server 2016 -
    microsoft windows server 2019 -
    microsoft .net framework 4.7.1
    microsoft windows 10 1607
    microsoft windows 10 1703
    microsoft windows 10 1709
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft windows server 2016 -
    microsoft windows server 2016 1709
    microsoft .net framework 4.7.2
    microsoft windows 10 1607
    microsoft windows 10 1703
    microsoft windows 10 1709
    microsoft windows 10 1803
    microsoft windows 10 1809
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 -
    microsoft windows server 2012 r2
    microsoft windows server 2016 -
    microsoft windows server 2016 1709
    microsoft windows server 2016 1803
    microsoft windows server 2019 -
    microsoft .net framework 3.5
    microsoft .net framework 3.5.1
    microsoft .net framework 4.5.2
    microsoft .net framework 4.6
    microsoft .net framework 4.6.1
    microsoft .net framework 4.6.2
    microsoft .net framework 4.7
    microsoft .net framework 4.7.1
    microsoft .net framework 4.7.2
    microsoft windows *
    microsoft windows server 2008 sp2
    microsoft windows server 2008 sp2
    microsoft windows 7 - sp1
    microsoft windows 7 * sp1
    microsoft windows server 2008 r2
    microsoft windows server 2008 r2
    microsoft windows server 2012
    microsoft windows 8.1 - -
    microsoft windows 8.1 *
    microsoft windows server 2012 r2
    microsoft windows rt 8.1 *
    microsoft windows 10 -
    microsoft windows 10 *
    microsoft windows server 2016
    microsoft windows server 1709
    microsoft windows server 1803
    microsoft windows server 2019
    microsoft windows 10 -