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guix/gnu/packages/patches/icecat-CVE-2015-4495.patch
Mark H Weaver a5e55dfbb7 gnu: icecat: Add fix for CVE-2015-4495.
* gnu/packages/patches/icecat-CVE-2015-4495.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/gnuzilla.scm (icecat)[source]: Add patch.  Move the 'patches'
  field above the snippet.
2015-08-07 23:08:41 -04:00

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Diff

Backported from upstream commits labelled "Bug 1178058" from the esr38 branch
by Boris Zbarsky <bzbarsky@mit.edu> and Bobby Holley <bobbyholley@gmail.com>.
--- icecat-31.8.0/docshell/base/nsDocShell.cpp
+++ icecat-31.8.0/docshell/base/nsDocShell.cpp
@@ -1546,12 +1546,21 @@
if (owner && mItemType != typeChrome) {
nsCOMPtr<nsIPrincipal> ownerPrincipal = do_QueryInterface(owner);
- if (nsContentUtils::IsSystemOrExpandedPrincipal(ownerPrincipal)) {
+ if (nsContentUtils::IsSystemPrincipal(ownerPrincipal)) {
if (ownerIsExplicit) {
return NS_ERROR_DOM_SECURITY_ERR;
}
owner = nullptr;
inheritOwner = true;
+ } else if (nsContentUtils::IsExpandedPrincipal(ownerPrincipal)) {
+ if (ownerIsExplicit) {
+ return NS_ERROR_DOM_SECURITY_ERR;
+ }
+ // Don't inherit from the current page. Just do the safe thing
+ // and pretend that we were loaded by a nullprincipal.
+ owner = do_CreateInstance("@mozilla.org/nullprincipal;1");
+ NS_ENSURE_TRUE(owner, NS_ERROR_FAILURE);
+ inheritOwner = false;
}
}
if (!owner && !inheritOwner && !ownerIsExplicit) {