CVE-2015-10067 (published 2023-01-18T01:15Z)

A vulnerability was found in oznetmaster SSharpSmartThreadPool. It has been classified as problematic. This affects an unknown part of the file SSharpSmartThreadPool/SmartThreadPool.cs. The manipulation leads to race condition within a thread. The complexity of an attack is rather high. The exploitability is told to be difficult. The patch is named 0e58073c831093aad75e077962e9fb55cad0dc5f. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-218463.

CVSS v3 base score: 8.1, HIGH (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Weakness information:
cwe_id: CWE-362
cwe_name: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
description: The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
extended_description: 
            This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
            A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
            A race condition violates these properties, which are closely related:
               
                  Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
                  Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
               
            A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
            The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the product; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable product.
         
         

Fix information:
repo_url: https://github.com/oznetmaster/SSharpSmartThreadPool
commit_details: repo_url: https://github.com/oznetmaster/SSharpSmartThreadPool
author: oznetmaster
author_date: 2015-03-14 11:05:44+08:00
msg: Fixed critical race vulnerability in Cancel
repository: repo_url: https://github.com/oznetmaster/SSharpSmartThreadPool
repo_name: oznetmaster/SSharpSmartThreadPool
description: Port of Amib.SmartThreadPool to S# Pro
repo_language: C#
owner: oznetmaster
file_changes: filename: SSharpSmartThreadPool.csproj
change_type: ModificationType.MODIFY
diff: @@ -111,7 +111,7 @@
         <Programmer />
         <ArchiveFilename>C:\Projects\Crestron\Simpl# Pro Libraries\SSharpSmartThreadPool\SSharpSmartThreadPool\bin\Debug\SSharpSmartThreadPool.cplz</ArchiveFilename>
         <MinFirmwareVersion>1.009.0029</MinFirmwareVersion>
-        <CompiledOn>3/14/2015 4:17:08 AM</CompiledOn>
+        <CompiledOn>3/14/2015 11:03:51 AM</CompiledOn>
         <AdditionalInfo />
         <EmbedSourceArchive>False</EmbedSourceArchive>
         <CopyTo />

programming_language: C++
filename: SmartThreadPool.cs
change_type: ModificationType.MODIFY
diff: @@ -1657,7 +1657,14 @@ public override void Cancel (bool abortExecution)
 
 			if (abortExecution)
 				{
-				foreach (ThreadEntry threadEntry in _workerThreads.Values)
+				ThreadEntry[] threadEntries;
+				lock (_workerThreads.SyncRoot)
+					{
+					threadEntries = new ThreadEntry[_workerThreads.RealCount];
+					_workerThreads.Values.CopyTo (threadEntries, 0);
+					}
+
+				foreach (ThreadEntry threadEntry in threadEntries)
 					{
 					WorkItem workItem = threadEntry.CurrentWorkItem;
 					if (null != workItem &&

programming_language: C#
filename: SSharpSmartThreadPoolTests.csproj
change_type: ModificationType.MODIFY
diff: @@ -141,13 +141,10 @@
         <Programmer />
         <ArchiveFilename>C:\Projects\Crestron\Simpl# Pro Libraries\SSharpSmartThreadPool\SSharpSmartThreadPoolTests\bin\Debug\SSharpSmartThreadPoolTests.cplz</ArchiveFilename>
         <MinFirmwareVersion>1.009.0029</MinFirmwareVersion>
-        <CompiledOn>3/13/2015 10:04:01 AM</CompiledOn>
+        <CompiledOn>3/14/2015 11:00:21 AM</CompiledOn>
         <AdditionalInfo />
         <EmbedSourceArchive>False</EmbedSourceArchive>
-        <CopyTo>
-          <DebugAnyCPU />
-          <ReleaseAnyCPU />
-        </CopyTo>
+        <CopyTo />
         <OriginalReferenceSources>
           <Reference sourceFilename="../../SSharpNUnitLite3/SSharpNunitLite/bin/Release/SSharpNunitLite.dll" referenceName="SSharpNunitLite" />
           <Reference sourceFilename="../../../Simpl%23%20Libraries/SSharpCrestronExtensionsLibrary/SSharpCrestronExtensionsLibrary/bin/Release/SSharpCrestronExtensionsLibrary.dll" referenceName="SSharpCrestronExtensionsLibrary" />

programming_language: C++