The version of Mozilla Firefox installed on the remote Windows host is prior to 50.0. It is, therefore, affected by multiple vulnerabilities, the majority of which are remote code execution vulnerabilities. An unauthenticated, remote attacker can exploit these vulnerabilities by convincing a user to visit a specially crafted website, resulting in the execution of arbitrary code in the context of the current user.

This update to Mozilla Firefox 50.0 fixes a number of security issues.

The following vulnerabilities were fixed in Mozilla Firefox (MFSA 2016-89) :

  - CVE-2016-5296: Heap-buffer-overflow WRITE in     rasterize_edges_1 (bmo#1292443)

  - CVE-2016-5292: URL parsing causes crash (bmo#1288482)

  - CVE-2016-5297: Incorrect argument length checking in     JavaScript (bmo#1303678)

  - CVE-2016-9064: Addons update must verify IDs match     between current and new versions (bmo#1303418)

  - CVE-2016-9066: Integer overflow leading to a buffer     overflow in nsScriptLoadHandler (bmo#1299686)

  - CVE-2016-9067: heap-use-after-free in     nsINode::ReplaceOrInsertBefore (bmo#1301777, bmo#1308922     (CVE-2016-9069))

  - CVE-2016-9068: heap-use-after-free in nsRefreshDriver     (bmo#1302973)

  - CVE-2016-9075: WebExtensions can access the     mozAddonManager API and use it to gain elevated     privileges (bmo#1295324)

  - CVE-2016-9077: Canvas filters allow feDisplacementMaps     to be applied to cross-origin images, allowing timing     attacks on them (bmo#1298552)

  - CVE-2016-5291: Same-origin policy violation using local     HTML file and saved shortcut file (bmo#1292159)

  - CVE-2016-9070: Sidebar bookmark can have reference to     chrome window (bmo#1281071)

  - CVE-2016-9073: windows.create schema doesn't specify     'format': 'relativeUrl' (bmo#1289273)

  - CVE-2016-9076: select dropdown menu can be used for URL     bar spoofing on e10s (bmo#1276976)

  - CVE-2016-9063: Possible integer overflow to fix inside     XML_Parse in expat (bmo#1274777)

  - CVE-2016-9071: Probe browser history via HSTS/301     redirect + CSP (bmo#1285003)

  - CVE-2016-5289: Memory safety bugs fixed in Firefox 50

  - CVE-2016-5290: Memory safety bugs fixed in Firefox 50     and Firefox ESR 45.5

The following vulnerabilities were fixed in Mozilla NSS 3.26.1 :

  - CVE-2016-9074: Insufficient timing side-channel     resistance in divSpoiler (bmo#1293334) Mozilla Firefox     now requires mozilla-nss 3.26.2.

New features in Mozilla Firefox :

  - Updates to keyboard shortcuts Set a preference to have     Ctrl+Tab cycle through tabs in recently used order View     a page in Reader Mode by using Ctrl+Alt+R

  - Added option to Find in page that allows users to limit     search to whole words only

  - Added download protection for a large number of     executable file types on Windows, Mac and Linux

  - Fixed rendering of dashed and dotted borders with     rounded corners (border-radius)

  - Added a built-in Emoji set for operating systems without     native Emoji fonts

  - Blocked versions of libavcodec older than 54.35.1

  - additional locale

mozilla-nss was updated to 3.26.2, incorporating the following changes :

  - the selfserv test utility has been enhanced to support     ALPN (HTTP/1.1) and 0-RTT

  - The following CA certificate was added: CN = ISRG Root     X1

  - NPN is disabled and ALPN is enabled by default

  - MD5 signature algorithms sent by the server in     CertificateRequest messages are now properly ignored

Multiple security issues have been found in the Mozilla Firefox web browser: Multiple memory safety errors, buffer overflows and other implementation errors may lead to the execution of arbitrary code or bypass of the same-origin policy. Also, a man-in-the-middle attack in the addon update mechanism has been fixed.

The remote host is affected by the vulnerability described in GLSA-201701-46 (Mozilla Network Security Service (NSS): Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in NSS. Please review the       CVE identifiers and technical papers referenced below for details.
  Impact :

    Remote attackers could conduct man-in-the-middle attacks, obtain access       to private key information, or cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

This update for MozillaFirefox, mozilla-nss fixes security issues and bugs. The following vulnerabilities were fixed in Firefox ESR 45.5.1 (bsc#1009026) :

  - CVE-2016-9079: Use-after-free in SVG Animation     (bsc#1012964 MFSA 2016-92)

  - CVE-2016-5297: Incorrect argument length checking in     JavaScript (bsc#1010401)

  - CVE-2016-9066: Integer overflow leading to a buffer     overflow in nsScriptLoadHandler (bsc#1010404)

  - CVE-2016-5296: Heap-buffer-overflow WRITE in     rasterize_edges_1 (bsc#1010395)

  - CVE-2016-9064: Addons update must verify IDs match     between current and new versions (bsc#1010402)

  - CVE-2016-5290: Memory safety bugs fixed in Firefox 50     and Firefox ESR 45.5 (bsc#1010427)

  - CVE-2016-5291: Same-origin policy violation using local     HTML file and saved shortcut file (bsc#1010410) The     following vulnerabilities were fixed in mozilla-nss     3.21.3 :

  - CVE-2016-9074: Insufficient timing side-channel     resistance in divSpoiler (bsc#1010422)

  - CVE-2016-5285: Missing NULL check in PK11_SignWithSymKey     / ssl3_ComputeRecordMACConstantTime causes server crash     (bsc#1010517) The following bugs were fixed :

  - Firefox would fail to go into fullscreen mode with some     window managers (bsc#992549)

  - font warning messages would flood console, now using     fontconfig configuration from firefox-fontconfig instead     of the system one (bsc#1000751)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

遠端 macOS 或 Mac OS X 主機上安裝的 Mozilla Firefox ESR 版本為 45.4 之前的 45.x 版。因此會受到多個弱點影響，其中大部分是遠端程式碼執行弱點。未經驗證的遠端攻擊者可加以惡意利用，誘騙使用者造訪特製的網站，進而導致在目前使用者的內容中執行任意程式碼。

據發現，NSS 未正確處理某些無效的 Diffie-Hellman 金鑰。遠端攻擊者可能會利用此缺陷造成 NSS 損毀，進而導致拒絕服務。此問題僅適用 Ubuntu 12.04 LTS、Ubuntu 14.04 LTS 和 Ubuntu 16.04 LTS。
(CVE-2016-5285)

Hubert Kario 發現 NSS 未正確處理 Diffie Hellman 用戶端金鑰交換。遠端攻擊者可能會利用此缺陷發動小型子群組限制攻擊並復原私密金鑰。此問題僅適用 Ubuntu 12.04 LTS、Ubuntu 14.04 LTS 和 Ubuntu 16.04 LTS。(CVE-2016-8635)

Franziskus Kiefer 發現 NSS 未正確緩解某些計時旁路攻擊。遠端攻擊者可能會利用此缺陷復原私密金鑰。(CVE-2016-9074)

此更新可將 NSS 套件更新至 3.26.2 版，其中包含最新版的 CA 憑證套組。

請注意，Tenable Network Security 已直接從 Ubuntu 安全性公告擷取前述描述區塊。Tenable 已盡量在不造成其他問題的前提下，嘗試自動清理並將其格式化。

在 Debian 版的 Mozilla Thunderbird 郵件用戶端 Icedove 中發現多個安全性問題：多個記憶體安全錯誤、同源原則繞過、整數溢位、緩衝區溢位和釋放後使用錯誤，可能導致執行任意程式碼或拒絕服務。針對 Debian 7「Wheezy」，這些問題已在 45.5.1-1~deb7u1 版本中修正。建議您升級 icedove 套件。注意：Tenable Network Security 已直接從 DLA 安全性公告擷取前置描述區塊。Tenable 已盡量在不造成其他問題的前提下，嘗試自動清理並將其格式化。

遠端主機受到 GLSA-201701-15 中所述的弱點影響 (Mozilla Firefox、Thunderbird：多個弱點) 在 Mozilla Firefox 和 Thunderbird 中發現多個弱點。如需詳細資訊，請檢閱以下提及的 CVE 識別碼。影響：遠端攻擊者可能以處理程序的權限執行任意程式碼，或透過多個向量造成拒絕服務情況。因應措施：目前尚無已知的因應措施。

在 Debian 版的 Mozilla Thunderbird 郵件用戶端 Icedove 中發現多個安全性問題：多個記憶體安全錯誤、同源原則繞過、整數溢位、緩衝區溢位和釋放後使用錯誤，可能導致執行任意程式碼或拒絕服務。

Versions of Mozilla Firefox prior to 50.0 are unpatched for the following vulnerabilities :

 - An overflow condition exists in the 'RASTERIZE_EDGES()' function in 'gfx/cairo/libpixman/src/pixman-edge-imp.h'. The issue is triggered as certain input is not properly validated when handling SVG content. This may allow a context-dependent attacker to cause a heap-based overflow, potentially allowing the execution of arbitrary code.
 - A flaw exists in the 'net_CoalesceDirs()' function in 'netwerk/base/nsURLHelper.cpp' that is triggered when handling specially crafted URLs. This may allow a context-dependent attacker to potentially execute arbitrary code.
 - A flaw exists that is triggered when the Mozilla Updater is run with the updater's log file in the working directory pointing to a hardlink. This may allow a local attacker to append data to an arbitrary local file.
 - A flaw exists in the Mozilla Updater that is triggered as it may select an arbitrary target working directory to output files from the update process. No further details have been provided by the vendor.
 - A flaw exists that is triggered when length checking JavaScript arguments. This may allow a context-dependent attacker to have an unspecified impact.
 - A flaw exists that is triggered as add-on update IDs are not properly validated. This may allow an attacker with the ability to intercept network traffic '(e.g'. MitM, DNS cache poisoning) to provide malicious add-on updates.
 - A flaw exists that is triggered when a context-dependent attacker forces a user into full-screen mode, which may potentially allow the attacker to use a fake location bar to perform spoofing attacks.
 - An integer overflow condition exists in the 'nsScriptLoadHandler::TryDecodeRawData()' function in 'dom/base/nsScriptLoader.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to cause a buffer overflow, potentially allowing the execution of arbitrary code.
 - A use-after-free error exists in the 'nsINode::ReplaceOrInsertBefore()' function in 'dom/base/nsINode.cpp' that is triggered when handling certain DOM operations. 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 'nsINode::Prepend()' function in 'dom/base/nsINode.cpp' that is triggered when handling DOM operations. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in 'nsRefreshDriver'. The issue is triggered when handling web animation timelines. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists in 'dom/plugins/base/nsPluginTags.cpp' that is triggered as the sandbox for 64-bit NPAPI plugins may not be enabled by default. This may potentially result in less secure behavior than intended.
 - A flaw exists in 'toolkit/components/extensions/ExtensionContent.jsm' that is triggered as WebExtensions may inappropriately access the mozAddonManager API. This may allow a context-dependent attacker to use a specially crafted extension to install further extensions without a user's permission.
 - A flaw exists in 'dom/canvas/CanvasRenderingContext2D.cpp' that is triggered by the use of the feDisplacementMap filter on images that are loaded cross-origin. This may allow a context-dependent attacker to conduct a timing attack and have an unspecified impact.
 - A flaw exists in the 'nsBaseChannel::Redirect()' function in 'netwerk/base/nsBaseChannel.cpp'. The issue is triggered as local shortcut files may be used to bypass the same-origin policy and load local content from the disk.
 - A flaw exists in the 'ProcessSoftwareUpdateCommand()' function in 'toolkit/components/maintenanceservice/workmonitor.cpp', as it may copy 'updater.exe' from untrusted directories. This may allow a local attacker to read files with SYSTEM privileges.
 - A flaw exists that is triggered when a page load is disrupted. This may result in the previous page's favicon and SSL indicator persisting, potentially misleading a user about the URL of the page being visited.
 - A flaw exists that is triggered when a previously installed application defines the same signature-level permissions as Firefox. This may allow a local attacker to intercept and disclose AuthTokens intended to be sent to Firefox.
 - A flaw exists that is triggered when a previously installed application defines the same signature-level permissions as Firefox. This may allow a local attacker to intercept and disclose API keys intended to be sent to Firefox.
 - A flaw exists in 'mobile/android/base/java/org/mozilla/gecko/PrivateTab.java' that is triggered, as browsing metadata from private browsing may persist in the 'browser.db' and 'browser.db'-wal files within a Firefox profile. This may potentially allow a physically present attacker to disclose information about private browsing.
 - A flaw exists in 'dom/bindings/Codegen.py' that is triggered when loading pages in a sidebar via a bookmark. This may allow the page to reference a privileged chrome window, violating the same-origin policy and engaging in limited JavaScript operations.
 - A flaw exists that is triggered as the 'windows.create' schema doesn't specify "format": "relativeUrl". This may allow a context-dependent attacker to escape the WebExtension sandbox.
 - An unspecified flaw exists in 'divSpoiler' that may allow an attacker to conduct a side-channel attack. No further details have been provided by the vendor.
 - A flaw exists that is triggered as the "select" dropdown menu may potentially cover location bar content, allowing a context-dependent attacker to spoof the location bar.
 - An integer overflow condition exists in the 'XML_Parse()' function in 'parser/expat/lib/xmlparse.c'. The issue is triggered as certain input is not properly validated when parsing XML content. This may allow a context-dependent attacker to have an unspecified impact.
 - A flaw exists in the 'nsCSPHostSrc::permits()' function in 'dom/security/nsCSPUtils.cpp' that is triggered when the Content Security Policy (CSP) is combined with HTTP to HTTPS redirection. This may potentially allow a context-dependent attacker to enumerate the existence of a known site in a user's browser history.
 - 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.
 - A flaw exists in the 'EventListenerManager::GetListenerInfo()' function in 'dom/events/EventListenerManager.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 in 'dom/media/mediasource/TrackBuffersManager.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 'WebrtcVideoConduit::CodecConfigToWebRTCCodec()' function in 'media/webrtc/signaling/src/media-conduit/VideoConduit.cpp' that is triggered when handling simulcast streams. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists in 'js/src/jit/arm64/MacroAssembler-arm64.h' 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 exist that is triggered when handling screen/window/app capture. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists related to MessagePort not supporting transferable objects. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists that is triggered when handling DOM tree operations for 'insertBefore()' method calls. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists that is triggered when handling Ion-compiling of scripts with too many typesets. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists related to tracing of script pointers in off-thread compilation tasks. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists that is triggered when handling runtime checks for helper threads tracing. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'GlobalHelperThreadState::finishParseTask()' function in 'js/src/vm/HelperThreads.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 when handling frames. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists that is triggered as certain input is not properly validated when handling HTML5 tokenizing. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists in 'dom/events/IMEStateManager.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 'JSStructuredCloneWriter::transferOwnership()' function in 'js/src/vm/StructuredClone.cpp' that is triggered when handling user-defined structured clone tags. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.

Versions of Mozilla Firefox ESR earlier than 45.5 are unpatched for the following vulnerabilities :

 - An overflow condition exists in the 'RASTERIZE_EDGES()' function in 'gfx/cairo/libpixman/src/pixman-edge-imp.h'. The issue is triggered as certain input is not properly validated when handling SVG content. This may allow a context-dependent attacker to cause a heap-based overflow, potentially allowing the execution of arbitrary code.
 - A flaw exists that is triggered when the Mozilla Updater is run with the updater's log file in the working directory pointing to a hardlink. This may allow a local attacker to append data to an arbitrary local file.
 - A flaw exists in the Mozilla Updater that is triggered as it may select an arbitrary target working directory to output files from the update process. No further details have been provided by the vendor.
 - A flaw exists that is triggered when length checking JavaScript arguments. This may allow a context-dependent attacker to have an unspecified impact.
 - A flaw exists that is triggered as add-on update IDs are not properly validated. This may allow an attacker with the ability to intercept network traffic '(e.g'. MitM, DNS cache poisoning) to provide malicious add-on updates.
 - An integer overflow condition exists in the 'nsScriptLoadHandler::TryDecodeRawData()' function in 'dom/base/nsScriptLoader.cpp' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to cause a buffer overflow, potentially allowing the execution of arbitrary code.
 - A flaw exists in the 'nsBaseChannel::Redirect()' function in 'netwerk/base/nsBaseChannel.cpp'. The issue is triggered as local shortcut files may be used to bypass the same-origin policy and load local content from the disk.
 - An unspecified flaw exists in 'divSpoiler' that may allow an attacker to conduct a side-channel attack. No further details have been provided by the vendor.
 - A flaw exists that is triggered when handling DOM tree operations for 'insertBefore()' method calls. 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.
 - A flaw exists that is triggered when handling Ion-compiling of scripts with too many typesets. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists related to tracing of script pointers in off-thread compilation tasks. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists that is triggered when handling runtime checks for helper threads tracing. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'GlobalHelperThreadState::finishParseTask()' function in 'js/src/vm/HelperThreads.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 when handling frames. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists that is triggered as certain input is not properly validated when handling HTML5 tokenizing. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - An unspecified flaw exists in 'dom/events/IMEStateManager.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.

ID	Name	Product	Family	Published	Updated	Severity
94960	Mozilla Firefox < 50.0 Multiple Vulnerabilities	Nessus	Windows	11/18/2016	11/14/2019	critical
95022	openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-1334)	Nessus	SuSE Local Security Checks	11/21/2016	1/19/2021	critical
94922	Debian DSA-3716-1 : firefox-esr - security update	Nessus	Debian Local Security Checks	11/17/2016	1/11/2021	critical
96643	GLSA-201701-46 : Mozilla Network Security Service (NSS): Multiple vulnerabilities (Logjam) (SLOTH)	Nessus	Gentoo Local Security Checks	1/20/2017	12/5/2022	high
95797	SUSE SLES11 Security Update : MozillaFirefox, mozilla-nss (SUSE-SU-2016:3105-1)	Nessus	SuSE Local Security Checks	12/14/2016	6/22/2023	critical
94957	Mozilla Firefox ESR 45.x < 45.5 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	11/18/2016	11/14/2019	critical
96304	Ubuntu 14.04 LTS / 16.04 LTS：NSS 弱點 (USN-3163-1)	Nessus	Ubuntu Local Security Checks	1/5/2017	2/18/2025	high
96013	Debian DLA-752-1：icedove 安全性更新	Nessus	Debian Local Security Checks	12/20/2016	6/22/2023	critical
96276	GLSA-201701-15：Mozilla Firefox、Thunderbird：多個弱點 (SWEET32)	Nessus	Gentoo Local Security Checks	1/4/2017	6/22/2023	critical
95666	Debian DSA-3730-1：icedove - 安全性更新	Nessus	Debian Local Security Checks	12/12/2016	6/22/2023	critical
9804	Mozilla Firefox < 50.0 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	12/2/2016	3/6/2019	high
9805	Mozilla Firefox ESR < 45.5 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	12/2/2016	11/6/2019	high

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