AuroraSupport/AuroraRuntime
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[*] Exploit mitigation - file protocols can be valid paths

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This commit is contained in:
Reece Wilson 2023-09-10 16:06:12 +01:00
parent 445085d069
commit 5107911ba5
1 changed files with 30 additions and 10 deletions
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40
Source/IO/FS/FS.cpp
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@ -30,43 +30,58 @@ namespace Aurora::IO::FS
/**
Resolve special character prefixes
*/
if ((path.size() >= 2) && (requireMountExpand))
if (requireMountExpand)
{
if (path[1] == kPathSplitter)
int iOffset { 0 };
/**
* Strip protocol prefix
*/
if (AuStartsWith(path, "file://"))
{
iOffset = 7;
}
if ((path.size() > iOffset + 1) &&
(path[iOffset + 1] == kPathSplitter))
{
// Working directory
if (path[0] == '.')
if (path[iOffset] == '.')
{
SysAssert(Process::GetWorkingDirectory(buffer));
buffer += kPathSplitter;
}
// Binary directory
else if (path[0] == '^')
else if (path[iOffset] == '^')
{
SysAssert(Process::GetProcDirectory(buffer));
buffer += kPathSplitter;
}
// Local Aurora profile
else if (path[0] == '~')
else if (path[iOffset] == '~')
{
SysAssert(FS::GetProfileDomain(buffer));
}
// Global Aurora profile
else if (path[0] == '!')
else if (path[iOffset] == '!')
{
SysAssert(FS::GetSystemDomain(buffer));
}
else if (path[0] == '?')
else if (path[iOffset] == '?')
{
// ...except for this one
isResource = true;
}
else
{
buffer.insert(buffer.begin(), path.begin(), path.begin() + 2); // ???
buffer.insert(buffer.begin(), path.begin() + iOffset, path.begin() + iOffset + 2); // ???
}
buffer.insert(buffer.end(), path.begin() + 2, path.end());
buffer.insert(buffer.end(), path.begin() + iOffset + 2, path.end());
}
else if (iOffset)
{
buffer.insert(buffer.end(), path.begin() + iOffset, path.end());
}
else
{
@ -250,6 +265,11 @@ namespace Aurora::IO::FS
}
}
}
if (!requiresMountUpdate)
{
requiresMountUpdate = AuStartsWith(str, "file://");
}
// worst case -> yea have fun
if (requiresExpanding || requiresMountUpdate)