處理格式有誤之網頁內容時發現多個瑕疵。包含惡意內容的網頁可造成 Firefox 損毀，或可能利用執行 Firefox 之使用者的權限來執行任意程式碼。(CVE-2016-1930、CVE-2016-1935)

安裝更新之後，Firefox 必須重新啟動，變更才會生效。

遠端 Ubuntu 14.04 LTS 主機上安裝的套件受到 USN-2880-1 公告中所提及的多個弱點影響。

    Bob Clary、Christian Holler、Nils Ohlmeier、Gary Kwong、Jesse Ruderman、Carsten Book、Randell Jesup、Nicolas Pierron、Eric Rescorla、Tyson Smith 和 Gabor Krizsanits 發現 Firefox 中有多個記憶體安全問題。如果使用者遭到誘騙而開啟特製網站，攻擊者可能加以惡意利用，透過損毀應用程式來引發拒絕服務，或以叫用 Firefox 的使用者權限執行任意程式碼。(CVE-2016-1930、CVE-2016-1931)

    Gustavo Grieco 發現，在某些情況下載入 GIF 影像時，會發生一個記憶體不足損毀問題。如果使用者遭到誘騙而開啟特製的網站，攻擊者便可惡意利用此弱點造成拒絕服務。(CVE-2016-1933)

    Aki Helin 發現，在某些情況下轉譯 WebGL 內容時出現一個緩衝區溢位問題。如果使用者遭到誘騙而開啟特製網站，攻擊者可能加以惡意利用，透過損毀應用程式來引發拒絕服務，或以叫用 Firefox 的使用者權限執行任意程式碼。(CVE-2016-1935)

    據發現，聚焦通訊協定處置程式對話方塊時，遺漏一個延遲。如果使用者遭到誘騙而開啟特製的網站，攻擊者可能加以惡意利用，藉此發動點擊劫持攻擊。(CVE-2016-1937)

    Hanno Bck 發現，NSS 中的 mp_div 和 mp_exptmod 計算在某些情況下會產生不正確的結果，進而導致密碼編譯弱點。(CVE-2016-1938)

    Nicholas Hurley 發現，Firefox 允許在 cookie 名稱中設定控制字元。攻擊者可能加以惡意利用，對某些 Web 伺服器發動 Cookie 插入攻擊。
    (CVE-2016-1939)

    據發現，在位址列中貼上某些無效的 URL 時，位址列內容可能會遭到操控，進而顯示任意網站的位置。攻擊者可能加以惡意利用，發動 URL 偽造攻擊。(CVE-2016-1942)

    Ronald Crane 發現程式碼檢查過程中有三個弱點。如果使用者遭到誘騙而開啟特製網站，攻擊者可能加以惡意利用，透過損毀應用程式來引發拒絕服務，或以叫用 Firefox 的使用者權限執行任意程式碼。
    (CVE-2016-1944、CVE-2016-1945、CVE-2016-1946)

    Franois Marier 發現，Application Reputation 查閱未正確運作，其停用了針對潛在惡意下載的警告。攻擊者可能誘騙使用者下載惡意檔案，來惡意利用此問題。其他部分的安全瀏覽功能不受此問題影響。
    (CVE-2016-1947)

Tenable 已直接從 Ubuntu 安全公告擷取前置描述區塊。

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Mac OS X 主機上安裝的 Firefox 版本比 44 版舊。因此受到以下弱點影響：

- 存在一個 Cookie 插入弱點，這是因為將不合法控制字元儲存為 Cookie 值，違反 RFC6265 所導致。遠端攻擊者可惡意利用此弱點插入 Cookie。(CVE-2015-7208)

- 存在多個會讓遠端攻擊者執行任意程式碼的不明記憶體損毀問題。
 (CVE-2016-1930、CVE-2016-1931)

- 存在一個整數溢位情形，這是因為在去交錯式過程中不當剖析 GIF 影像所導致。遠端攻擊者可加以惡意利用，透過特製的 GIF 影像，造成拒絕服務情形或是執行任意程式碼。(CVE-2016-1933)

- WebGL 中存在一個緩衝區溢位情形，其會在處理快取記憶體不足錯誤情形時觸發。遠端攻擊者可惡意利用這點，執行任意程式碼。(CVE-2016-1935)

- 存在一個內容偽造弱點，這是因為通訊協定處置程式對話方塊，將按兩下事件視為兩次的按一下事件所導致。遠端攻擊者可惡意利用此偽造內容，讓攻擊者能夠誘騙使用者執行惡意動作。(CVE-2016-1937)

- Network Security Services (NSS) 中存在一個密碼編譯弱點，這是因為「mp_div」及「mp_exptmod」的錯誤計算所導致。(CVE-2016-1938)

- 存在一個 Cookie 插入弱點，這是因為在 Cookie 名稱中允許使用不合法控制字元所導致。遠端攻擊者可惡意利用此弱點插入 Cookie。
 (CVE-2016-1939)

- 存在一個 URL 偽造弱點，這是因為一個對內部通訊協定而言無效的 URL，在處理過程中觸發一個瑕疵，造成將 URL 貼到位址列中所導致。遠端攻擊者可惡意利用此偽造 URL，讓攻擊者能夠誘騙使用者造訪惡意網站。(CVE-2016-1942)

- ANGLE 圖庫實作中存在一個不明的記憶體損毀問題。遠端攻擊者可惡意利用此問題損毀記憶體，進而導致任意程式碼執行。(CVE-2016-1944)

- 存在一個環境指標瑕疵，這是因為不當處理 ZIP 檔案所導致。遠端攻擊者可惡意利用此瑕疵，透過特製 ZIP 檔案造成不明影響。
 (CVE-2016-1945)

- 隨附的 libstagefright 版本中存在一個整數溢位情形，這是因為不當處理 MP4 檔案詮釋資料所導致。遠端攻擊者可惡意利用這點，執行任意程式碼。(CVE-2016-1946)

- 安全瀏覽功能中存在一個瑕疵，這是因為無法連線至 Application Reputation 服務所導致。遠端攻擊者可以惡意利用此瑕疵，說服使用者在未受警告的情況下下載惡意執行檔。(CVE-2016-1947)

- Network Security Services (NSS) 中存在一個釋放後使用錯誤，這是因為 DHE 和 ECDHE 交握期間不當處理失敗的配置所導致。攻擊者可加以利用，解除參照已釋放的記憶體，進而導致執行任意程式碼。
 (CVE-2016-1978)

此 MozillaFirefox 更新可修正數個安全性問題和錯誤。

Mozilla Firefox 已更新至 44.0 版。Mozilla NSS 已更新至 3.21 版 Mozilla NSPR 已更新至 4.11 版。

下列弱點已修正：

- CVE-2016-1930/CVE-2016-1931：其他記憶體安全危險 (boo#963633)

- CVE-2016-1933：剖析 GIF 格式影像時發生記憶體不足損毀 (boo#963634)

- CVE-2016-1935：在記憶體不足的配置後，WebGL 中發生緩衝區溢位 (boo#963635)

- CVE-2015-7208/CVE-2016-1939：Firefox 允許在 Cookie 名稱中設定控制字元 (boo#963637)

- CVE-2016-1937：在通訊協定處置程式對話方塊中的使用者按一下事件後遺漏延遲 (boo#963641)

- CVE-2016-1938：NSS 中的 mp_div 和 mp_exptmod 密碼編譯函式中有錯誤 (boo#963731)

- CVE-2016-1942/CVE-2016-1943：位址列偽造攻擊 (boo#963643)

- CVE-2016-1944/CVE-2016-1945/CVE-2016-1946：透過程式碼檢查發現不安全的記憶體操控 (boo#963644)

- CVE-2016-1947：Firefox 43 中的 Application Reputation 服務已停用 (boo#963645)

包含下列來自 Mozilla Firefox 43.0.4 的變更：

- 重新啟用 SHA-1 憑證，防止過時的攔截式安全性裝置干擾受到妥善保護的 SSL/TLS 連線

The version of Firefox is prior to 44.0 and is affected by multiple vulnerabilities : 

 - Multiple unspecified memory corruption issues exist that allow a remote attacker to execute arbitrary code. (CVE-2016-1930, CVE-2016-1931)
 - An integer overflow condition exists due to improper parsing of GIF images during deinterlacing. A remote attacker can exploit this, via a specially crafted GIF image, to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1933)
 - A buffer overflow condition exists in WebGL that is triggered when handling cache out-of-memory error conditions. A remote attacker can exploit this to execute arbitrary code. (CVE-2016-1935)
 - A content spoofing vulnerability exists due to the protocol handler dialog treating double click events as two single click events. A remote attacker can exploit this to spoof content, allowing the attacker to trick a user into performing malicious actions. (CVE-2016-1937)
 - A cryptographic weakness exists in Network Security Services (NSS) due to incorrect calculations with 'mp_div' and 'mp_exptmod'. (CVE-2016-1938)
 - A cookie injection vulnerability exists due to illegal control characters being permitted in cookie names. A remote attacker can exploit this to inject cookies. (CVE-2016-1939)
 - A flaw exists that is triggered as the delay between the download dialog getting focus and the button getting enabled is too short. If a context-dependent attacker can trick a user into double clicking in a specific location, they can pass the second click through to a dialog below that location. This will allow the attacker to cause the user to perform unintentional actions. (CVE-2016-1941)
 - An URL spoofing vulnerability exists due to a flaw that is triggered during the handling of a URL that invalid for the internal protocol, causing the URL to be pasted into the address bar. A remote attacker can exploit this spoof URLs, allowing the attacker to trick a user into visiting a malicious website. (CVE-2016-1942)
 - An unspecified memory corruption issue exists in the ANGLE graphics library implementation. A remote attacker can exploit this to corrupt memory, resulting in the execution of arbitrary code. (CVE-2016-1944)
 - A wild pointer flaw exists due to improper handling of ZIP files. A remote attacker can exploit this, via a crafted ZIP file, to have an unspecified impact. (CVE-2016-1945)
 - An integer overflow condition exists in the bundled version of libstagefright due to improper handling of MP4 file metadata. A remote attacker can exploit this to execute arbitrary code. (CVE-2016-1946)
 - A flaw exists in the safe browsing feature due to the Application Reputation service being unreachable. A remote attacker can exploit this to convince a user into downloading a malicious executable without being warned. (CVE-2016-1947)

The specific version of Firefox that the system is running is reportedly affected by the following vulnerabilities:

- Brotli contains a flaw in the DecodeVarLenUint8() function in dec/decode.c related to use of uninitialized memory. This may allow a context-dependent attacker to have an unspecified impact. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1930)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains an unspecified flaw that may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. No further details have been provided by the vendor. (CVE-2016-1931)

- Mozilla Firefox contains a flaw in the Downscaler::ClearRow() function in image/Downscaler.cpp. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the nsComputedDOMStyle::GetStyleContextForElement() and nsComputedDOMStyle::GetStyleContextForElementNoFlush() functions in layout/style/nsComputedDOMStyle.cpp. The issue is triggered when using a frame that is not in the composed document. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw that is triggered when handling fuctions accepting rest parameters. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the CodeGeneratorShared::allocateData() function in js/src/jit/shared/CodeGenerator-shared.h that is triggered when handling out-of-memory error conditions. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the VCMGenericEncoder::Release() function in media/webrtc/trunk/webrtc/modules/video_coding/main/source/generic_encoder.cc. The issue is triggered as the encoded-frame callback is not unregistered when releasing codec databases. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains an unspecified flaw in js/src/vm/HelperThreads.cpp. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the JSRuntime::createJitRuntime() function in js/src/jscompartment.cpp that is triggered when handling out-of-memory error conditions. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains an unspecified flaw that is triggered when handling attribute changes. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the HTMLMediaElement::NotifyAddedSource() function in dom/html/HTMLMediaElement.cpp. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the nsGIFDecoder2::WriteInternal() function in image/decoders/nsGIFDecoder2.cpp that is triggered when handling GIF image frame bounds. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1931)

- Mozilla Firefox contains a flaw that is triggered when handling WebAudio content. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a use-after-free condition in the nsLayoutUtils::SurfaceFromElement() function in dom/html/HTMLMediaElement.cpp. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1930)

- Mozilla Firefox contains a flaw in the Evaluate() function in js/src/shell/js.cpp. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code. (CVE-2016-1931)

- Mozilla Firefox contains an overflow condition in the WebGLContext::BufferData() function in dom/canvas/WebGLContextBuffers.cpp that is triggered when handling cache out-of-memory error conditions. This may allow a context-dependent attacker to cause a buffer overflow and potentially execute arbitrary code. (CVE-2016-1935)

- Mozilla Firefox contains a flaw in the BrowserApp::onTabChanged() function in mobile/android/base/java/org/mozilla/gecko/BrowserApp.java. The issue is triggered when handling page scrolling. This may allow a context-dependent attacker to spoof the location. (CVE-2016-1943)

- Mozilla Firefox contains an integer overflow condition that is triggered when handling GIF images. This may allow a context-dependent attacker to have an unspecified impact. No further details have been provided by the vendor. (CVE-2016-1933)

- Mozilla Firefox contains a flaw in the Buffer11::NativeBuffer11::map() function within the ANGLE implementation. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1944)

- Mozilla Firefox for Android contains a flaw in mobile/android/chrome/content/browser.js that is triggered when handling data: URLs. This may allow a context-dependent attacker to spoof the location. (CVE-2016-1940)

- Mozilla Firefox contains a flaw in the safe browsing feature as the Application Reputation service was unreachable. This may allow a context-dependent attacker to trick a user into downloading a malicious executable without the user being warned. (CVE-2016-1947)

- Mozilla Firefox contains an integer overflow condition in the MoofParser::Metadata() function in media/libstagefright/binding/MoofParser.cpp. The issue is triggered when handling MP4 file metadata. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1946)

- Mozilla Firefox contains a flaw in modules/libjar/nsZipArchive.cpp that is triggered when handling ZIP files. This may allow a context-dependent attacker to have an unspecified impact. (CVE-2016-1945)

- Mozilla Firefox contains a flaw in the nsCookieService::SetCookieInternal() function in netwerk/cookie/nsCookieService.cpp as control characters are permitted in cookie names. This may allow a context-dependent attacker to inject cookies. (CVE-2016-1939)

- Mozilla Network Security Services (NSS) contains an unspecified cryptographical issue when handling calculations that contain mp_div or mp_exptmod. This may allow an attacker to trigger potential cryptographic weaknesses. (CVE-2016-1938)

- Mozilla Firefox for Android contains a flaw in mobile/android/chrome/content/browser.js that is triggered as lightweight themes fail to properly secure connections when installing themes. This may allow a remote man-in-the-middle attacker to make changes to the theme.
 (CVE-2016-1948)

- Mozilla Firefox contains a flaw in the protocol handler in toolkit/mozapps/handling/content/dialog.js that is due to the handler treating double click events as two single click events. This may allow a context-dependent attacker to spoof content to cause a user to potentially perform malicious actions, such as downloading attacker controlled software. (CVE-2016-1937)

- Mozilla Firefox for Mac OS X contains a flaw that is triggered as the delay between the download dialog getting focus and the button getting enabled is too short. If a context-dependent attacker can trick a user into double clicking in a specific location, they can pass the second click through to a dialog below that location. This will allow the attacker to cause the user to perform unintentional actions. (CVE-2016-1941)

- Mozilla Firefox contains a flaw in browser/base/content/urlbarBindings.xml that is triggered during the handling of a URL that is invalid for the internal protocol, which will cause the URL to be pasted into the address bar. This may allow a context-dependent attacker to spoof URLs. (CVE-2016-1942)

- Mozilla Network Security Services (NSS) contains a use-after-free error in the ssl3_HandleECDHServerKeyExchange() function. The issue is triggered when handling failed allocations during DHE and ECDHE handshakes. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-1978)

ID	Name	Product	Family	Published	Updated	Severity
88452	Scientific Linux 安全性更新：SL5.x、SL6.x、SL7.x i386/x86_64 上的 firefox	Nessus	Scientific Linux Local Security Checks	1/28/2016	1/14/2021	critical
88456	Ubuntu 14.04 LTS：Firefox 弱點 (USN-2880-1)	Nessus	Ubuntu Local Security Checks	1/28/2016	8/27/2024	critical
88459	Firefox < 44 多個弱點 (Mac OS X)	Nessus	MacOS X Local Security Checks	1/28/2016	11/20/2019	critical
88549	openSUSE 安全性更新：MozillaFirefox / mozilla-nss 和 mozilla-nspr (openSUSE-2016-128)	Nessus	SuSE Local Security Checks	2/3/2016	1/19/2021	critical
9075	Mozilla Firefox < 44.0 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2/19/2016	3/6/2019	critical
802019	Firefox < 44 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	9/6/2016		critical

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