出典: Red Hatセキュリティアドバイザリ2017:2831:firefoxの更新がRed Hat Enterprise Linux 6およびRed Hat Enterprise Linux 7用に入手可能になりました。Red Hat製品セキュリティは、この更新がセキュリティに及ぼす影響を重要度重大として評価しています。詳細な重要度評価を示すCVSS（共通脆弱性評価システム）ベーススコアは、「参照」セクションのCVEリンクから脆弱性ごとに入手できます。Mozilla Firefoxは、オープンソースのWebブラウザーです。この更新プログラムで、Firefoxがバージョン52.4.0 ESRにアップグレードされます。セキュリティ修正プログラム：* 不正な形式のWebコンテンツの処理に、複数の欠陥が見つかりました。悪意のあるコンテンツを含むWebページが、Firefoxをクラッシュさせたり、Firefoxを実行しているユーザーの権限で任意のコードを実行したりする可能性があります。（CVE-2017-7810、CVE-2017-7793、CVE-2017-7818、CVE-2017-7819、CVE-2017-7824、CVE-2017-7814、CVE-2017-7823）Red Hatはこれらの問題を報告してくれたMozillaプロジェクトに感謝の意を表します。アップストリームは最初の報告者であるChristoph Diehl氏、Jan de Mooij氏、Jason Kratzer氏、Randell Jesup氏、Tom Ritter氏、Tyson Smith氏、Sebastian Hengst氏、Abhishek Arya氏、Nils氏、Omair氏、Andre Weissflog氏、Francois Marier氏、Jun Kokatsu氏に感謝の意を表します。

リモートホストは、GLSA-201802-03（Mozilla Firefox：複数の脆弱性）で説明されている脆弱性に影響されています。複数の脆弱性がMozilla Firefoxで発見されています。詳細については、記載されているCVE識別番号を参照してください。影響：リモートの攻撃者が、ユーザーを誘導して特別に細工されたWebページを表示させる可能性があります。その結果、プロセスの権限で任意のコードが実行されたり、サービス拒否状態が引き起こされたりする可能性があります。さらに、リモートの攻撃者が、中間者攻撃を実行し、機密情報を取得し、アドレスバーを偽装し、クリックジャッキング攻撃を実施し、セキュリティ制限および保護メカニズムをバイパスし、その他の特定されていない影響を及ぼすことがあります。回避策：現時点では、既知の回避策はありません。

Versions of Mozilla Firefox ESR earlier than 52.4 are unpatched for the following vulnerabilities :

 - A flaw exists in 'js/src/vm/StructuredClone.cpp' that is triggered when handling structured clone reads. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - A flaw exists in 'editor/libeditor/HTMLEditor.cpp' that is triggered when handling root elements in the editor. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in 'dom/media/GraphDriver.cpp' that is triggered when handling errors. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An overflow condition exists in the 'hnj_hyphen_hyphword()' function in 'hyphen.c' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to cause a buffer overflow and potentially execute arbitrary code within a process linked against the library.
 - A flaw exists in the 'EditorBase::FinalizeSelection()' function in 'editor/libeditor/EditorBase.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'DocAccessible::DoARIAOwnsRelocation()' function in 'accessible/generic/DocAccessible.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A use-after-free condition exists in the Fetch API related to missing thread safety. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in 'accessible/generic/DocAccessible.cpp' that is triggered when manipulating Accessible Rich Internet Applications (ARIA) elements. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in design mode that is triggered when objects are resized. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in the 'ssl3_HandleCertificateVerify()' function in 'lib/ssl/ssl3con.c' that is triggered when handling handshake hashes during TLS '1.2' exchanges. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists in the PendingLookup class in 'toolkit/components/downloads/ApplicationReputation.cpp' that is triggered when handling downloads encoded with data: and blob: URL elements. This may allow a context-dependent attacker to bypass the phishing and malware protection feature.
 - A flaw exists in the 'MacOSFontEntry::ReadCMAP()' function in 'gfx/thebes/gfxMacPlatformFontList.mm' that is triggered as certain tibetan and arabic unicode characters are displayed as whitespace in combination with macOS fonts. With a specially crafted IDN domain, a context-dependent attacker can spoof a valid URL and conduct phishing attacks.
 - A flaw exists in the 'nsDocument::InitCSP()' function in 'dom/base/nsDocument.cpp' that is triggered as the sandbox directive does not create unique origin. This may result in incorrect enforcement of the content security policy (CSP).
 - An unspecified flaw exists that is triggered when drawing and validating elements with the ANGLE graphics library. This may allow a context-dependent attacker to cause a buffer overflow, potentially allowing the execution of arbitrary code.

Versions of Mozilla Firefox earlier than 56 are unpatched for the following vulnerabilities :

 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - A flaw exists in the 'js::AddPropertyTypesAfterProtoChange()' function in 'js/src/vm/NativeObject.cpp' that is triggered when handling the 'unknown-properties' flag. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in 'layout/style/nsCSSPseudoElements.cpp' that is triggered when handling pseudo-element atoms. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - A flaw exists in 'dom/base/nsDocument.cpp' that is triggered when handling intersection observers. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'LayerTransactionParent::Destroy()' function in 'gfx/layers/ipc/LayerTransactionParent.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An overflow condition exists in the 'FPSCounter::PrintHistogram()' function in 'gfx/layers/composite/FPSCounter.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to cause a buffer overflow and potentially execute arbitrary code.
 - A flaw exists in the 'FlagAllOperandsAsHavingRemovedUses()' function in 'js/src/jit/IonAnalysis.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in 'memory/mozjemalloc/mozjemalloc.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'ReadCompressedIndexDataValuesFromBlob()' function in 'dom/indexedDB/ActorsParent.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - A flaw exists in 'js/src/vm/StructuredClone.cpp' that is triggered when handling structured clone reads. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - A flaw exists in 'editor/libeditor/HTMLEditor.cpp' that is triggered when handling root elements in the editor. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in 'dom/media/GraphDriver.cpp' that is triggered when handling errors. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An overflow condition exists in the 'hnj_hyphen_hyphword()' function in 'hyphen.c' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to cause a buffer overflow and potentially execute arbitrary code within a process linked against the library.
 - A flaw exists in the 'EditorBase::FinalizeSelection()' function in 'editor/libeditor/EditorBase.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'DocAccessible::DoARIAOwnsRelocation()' function in 'accessible/generic/DocAccessible.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor.
 - A use-after-free condition exists in the Fetch API related to missing thread safety. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists that is triggered when pages enter fullscreen mode without user notification. This allows a context-dependent attacker to spoof the address bar.
 - A use-after-free error exists in 'accessible/generic/DocAccessible.cpp' that is triggered when manipulating Accessible Rich Internet Applications (ARIA) elements. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in design mode that is triggered when objects are resized. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in the 'ssl3_HandleCertificateVerify()' function in 'lib/ssl/ssl3con.c' that is triggered when handling handshake hashes during TLS '1.2' exchanges. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists that is triggered as the content principal is not properly checked when handling drag and drop actions onto the browser UI. With specially crafted web content including file: URLs, a context-dependent attacker can open local files.
 - A flaw exists in the PendingLookup class in 'toolkit/components/downloads/ApplicationReputation.cpp' that is triggered when handling downloads encoded with data: and blob: URL elements. This may allow a context-dependent attacker to bypass the phishing and malware protection feature.
 - An integer truncation flaw exists in the JavaScript parser that may allow a context-dependent attacker to potentially disclose memory contents.
 - A flaw exists in the 'MacOSFontEntry::ReadCMAP()' function in 'gfx/thebes/gfxMacPlatformFontList.mm' that is triggered as certain tibetan and arabic unicode characters are displayed as whitespace in combination with macOS fonts. With a specially crafted IDN domain, a context-dependent attacker can spoof a valid URL and conduct phishing attacks.
 - A flaw exists that is triggered when creating a modal dialog using the data: protocol via JavaScript. With a specially crafted web page, a context-dependent attacker can spoof the origin of the modal dialog.
 - A flaw exists in the WebExtensions component that is triggered when handling popups and panels in the extension UI. This may allow a context-dependent attacker to load an 'about:' URL.
 - A flaw exists in the WebExtensions component that is triggered when handling file downloads. This may allow a context-dependent attacker to download and open files without user interaction.
 - A flaw exists in the 'nsDocument::InitCSP()' function in 'dom/base/nsDocument.cpp' that is triggered as the sandbox directive does not create unique origin. This may result in incorrect enforcement of the content security policy (CSP).
 - A flaw exists in the WebCrypto API that is triggered as the AES-GCM implementation allows a zero-length IV. This may allow a context-dependent attacker to determine the authentication key.
 - A flaw exists that is is triggered as results of the 'instanceof' operator can be manipulated. With specially crafted web content, a context-dependent attacker can bypass the Xray wrapper mechanism.
 - An unspecified flaw exists that is triggered when drawing and validating elements with the ANGLE graphics library. This may allow a context-dependent attacker to cause a buffer overflow, potentially allowing the execution of arbitrary code.
 - A flaw exists related to speculative execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached during indirect branch prediction. This may allow a local attacker to train the Branch Target Buffer (BTB) to trigger a false prediction to a specially crafted memory location, causing a speculative execution of a crafted gadget and the caching of arbitrary memory. Using a side-channel attack on the cache the attacker can disclose parts of the privileged kernel memory.

ID	名稱	產品	系列	已發布	已更新	嚴重性
103558	Oracle Linux 6/7：firefox（ELSA-2017-2831）	Nessus	Oracle Linux Local Security Checks	2017/9/29	2024/10/22	critical
106884	GLSA-201802-03：Mozilla Firefox：複数の脆弱性	Nessus	Gentoo Local Security Checks	2018/2/20	2024/1/16	critical
700331	Mozilla Firefox ESR < 52.4 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2018/8/21	2019/11/6	high
700321	Mozilla Firefox < 56 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2018/8/21	2019/3/6	high

偵測

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critical

critical

high

high