termux-packages/packages/apt/fix-CVE-2019-3462.patch

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diff -uNr apt-1.4.8/apt-pkg/acquire-method.cc apt-1.4.8.mod/apt-pkg/acquire-method.cc
--- apt-1.4.8/apt-pkg/acquire-method.cc 2017-09-13 19:47:33.000000000 +0300
+++ apt-1.4.8.mod/apt-pkg/acquire-method.cc 2019-01-22 23:03:29.751025868 +0200
@@ -458,6 +458,13 @@
* the worker will enqueue again later on to the right queue */
void pkgAcqMethod::Redirect(const string &NewURI)
{
+ if (NewURI.find_first_not_of(" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~") != std::string::npos)
+ {
+ _error->Error("SECURITY: URL redirect target contains control characters, rejecting.");
+ Fail();
+ return;
+ }
+
std::cout << "103 Redirect\nURI: " << Queue->Uri << "\n"
<< "New-URI: " << NewURI << "\n"
<< "\n" << std::flush;