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proxy request: assert that API url starts with a slash

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We implicitly assume that to be the case when assembling the target
URL, so assert it explicitly as it's user controlled input.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Originally-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2022-07-02 07:56:12 +02:00
parent f325788131
commit 42bb4f3725
1 changed files with 8 additions and 0 deletions
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8
src/PVE/APIServer/AnyEvent.pm
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@ -691,6 +691,14 @@ sub proxy_request {
eval {
my $target;
my $keep_alive = 1;
# stringify URI object and verify it starts with a slash
$uri = "$uri";
if ($uri !~ m@^/@) {
$self->error($reqstate, 400, "invalid proxy uri");
return;
}
if ($host eq 'localhost') {
$target = "http://$host:85$uri";
# keep alive for localhost is not worth (connection setup is about 0.2ms)