The mozilla::a11y::HyperTextAccessible::GetChildOffset function in the accessibility implementation in Mozilla Firefox before 49.0 allows remote attackers to execute arbitrary code via a crafted web site.

The version of Mozilla Firefox installed on the remote Windows host is prior to 49. It is, therefore, affected by multiple vulnerabilities as noted in Mozilla Firefox stable channel update release notes for 2016/09/20. Please refer to the release notes for additional information. Note that Nessus has not attempted to exploit these issues but has instead relied only on the application's self-reported version number.

The version of Mozilla Firefox installed on the remote macOS host is prior to 49. It is, therefore, affected by multiple vulnerabilities as noted in Mozilla Firefox stable channel update release notes for 2016/09/20. Please refer to the release notes for additional information. Note that Nessus has not attempted to exploit these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-201701-15 (Mozilla Firefox, Thunderbird: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Mozilla Firefox and       Thunderbird. Please review the CVE identifiers referenced below for       details.
  Impact :

    A remote attacker could possibly execute arbitrary code with the       privileges of the process or cause a Denial of Service condition via       multiple vectors.
  Workaround :

    There is no known workaround at this time.

Versions of Mozilla Firefox prior to 49.0 are unpatched for the following vulnerabilities :

 - A flaw exists as the certificate pinning policy for built-in sites like 'addons.mozilla.org' is not honored due to the pins having expired. This may allow a Man-in-the-Middle (MitM) attacker able to generate a trusted certificate to conduct spoofing attacks.
 - A flaw exists in the 'CrossCompartmentWrapper::getPrototypeIfOrdinary()' function in 'js/src/proxy/CrossCompartmentWrapper.cpp' that is triggered as certain input is not properly validated. With a specially crafted web page, a context-dependent attacker can corrupt memory and potentially execute arbitrary code.
 - A use-after-free error exists in 'dom/media/systemservices/LoadManager.h' that is triggered as certain input is not properly validated. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists in the 'imgFrame::InitForDecoder()' function in 'image/imgFrame.cpp' that is triggered when handling paletted images. 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 in the 'GenerateCallGetter()' function in 'jit/IonCaches.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/platforms/wmf/WMFVideoMFTManager.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 'netwerk/sctp/src/netinet/sctputil.c' 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 WebRTC component that is triggered as certain input is not properly validated when handling H.264 STAP-A content. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'nsNodeUtils::CloneAndAdopt()' function in 'dom/base/nsNodeUtils.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 'parse()' function in 'libavcodec/vp9_parser.c' that is triggered when handling input frame sizes. This may allow a context-dependent attacker to corrupt memory, crashing a process linked against the library and potentially allowing the execution of 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 in 'netwerk/sctp/src/netinet/sctputil.c' that is triggered when handling association failures. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A flaw exists in the 'nsHttpChannelAuthProvider::OnAuthCancelled()' function in 'netwerk/protocol/http/nsHttpChannelAuthProvider.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.
 - An unspecified flaw exists that 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 that is triggered as certain input is not properly validated when handling APNG images. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code.
 - A use-after-free error exists that is triggered when handling SVG format content being manipulated through script code. 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 'nsTextNodeDirectionalityMap::RemoveElementFromMap()' function in 'dom/base/DirectionalityUtils.cpp' that is triggered when handling changing of text direction. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A flaw exists when handling content that requests favicons from non-whitelisted schemes using certain URI handlers e.g. jar:. This may allow a context-dependent attacker to bypass intended restrictions.
 - A use-after-free error exists in the 'nsRefreshDriver::Tick()' function that is triggered when handling web animations destroying a timeline. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A type confusion flaw exists in 'layout/forms/nsRangeFrame.cpp' that triggered when handling layout with input elements. This may allow a context-dependent attacker to potentially execute arbitrary code.
 - An overflow condition exists in the 'FilterSupport::ComputeSourceNeededRegions()' function that is triggered when handling empty filters during canvas rendering. This may allow a context-dependent attacker to cause a global-based buffer overflow and potentially execute arbitrary code.
 - An overflow condition exists in the 'nsCaseTransformTextRunFactory::TransformString()' function in 'layout/generic/nsTextRunTransformations.cpp' that is triggered when converting text containing certain unicode characters. This may allow a context-dependent attacker to cause a heap-based buffer overflow, potentially allowing the execution of arbitrary code.
 - A flaw exists that is triggered when handling drag-and-drop events for files. This may allow a context-dependent attacker to gain knowledge of the full local file path.
 - An out-of-bounds read flaw exists in 'dom/security/nsCSPParser.cpp' that is triggered when handling content security policies (CSP) containing empty referrer directives. This may allow a context-dependent attacker to cause a crash.
 - A flaw exists related to the handling of iframes. This may allow a context-dependent attacker to conduct an 'iframe src' fragment timing attack that discloses cross-origin data.
 - An overflow condition exists in the 'nsBMPEncoder::AddImageFrame()' function in 'dom/base/ImageEncoder.cpp' that is triggered when encoding image frames to images. This may allow a context-dependent attacker to cause a heap-based buffer overflow and potentially execute arbitrary code.
 - A use-after-free error exists in the 'DocAccessible::ProcessInvalidationList()' function in 'accessible/generic/DocAccessible.cpp' that is triggered when setting an aria-owns attribute. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - A use-after-free error exists in 'layout/style/nsRuleNode.cpp' that is triggered when handling web animations during restyling. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code.
 - An unspecified flaw exists in the 'HyperTextAccessible::GetChildOffset()' function. This may allow a context-dependent attacker to potentially execute arbitrary code.
 - An out-of-bounds read flaw exists in the 'nsCSSFrameConstructor::GetInsertionPrevSibling()' function in 'layout/base/nsCSSFrameConstructor.cpp' that is triggered when handling text runs. This may allow a context-dependent attacker to potentially disclose memory contents.

MozillaFirefox was updated to version 49.0 (boo#999701)

  - New features

  - Updated Firefox Login Manager to allow HTTPS pages to     use saved HTTP logins.

  - Added features to Reader Mode that make it easier on the     eyes and the ears

  - Improved video performance for users on systems that     support SSE3 without hardware acceleration

  - Added context menu controls to HTML5 audio and video     that let users loops files or play files at 1.25x speed

  - Improvements in about:memory reports for tracking font     memory usage

  - Security related fixes

  - MFSA 2016-85 CVE-2016-2827 (bmo#1289085) - Out-of-bounds     read in mozilla::net::IsValidReferrerPolicy     CVE-2016-5270 (bmo#1291016) - Heap-buffer-overflow in     nsCaseTransformTextRunFactory::TransformString     CVE-2016-5271 (bmo#1288946) - Out-of-bounds read in     PropertyProvider::GetSpacingInternal CVE-2016-5272     (bmo#1297934) - Bad cast in nsImageGeometryMixin     CVE-2016-5273 (bmo#1280387) - crash in     mozilla::a11y::HyperTextAccessible::GetChildOffset     CVE-2016-5276 (bmo#1287721) - Heap-use-after-free in     mozilla::a11y::DocAccessible::ProcessInvalidationList     CVE-2016-5274 (bmo#1282076) - use-after-free in     nsFrameManager::CaptureFrameState CVE-2016-5277     (bmo#1291665) - Heap-use-after-free in     nsRefreshDriver::Tick CVE-2016-5275 (bmo#1287316) -     global-buffer-overflow in     mozilla::gfx::FilterSupport::ComputeSourceNeededRegions     CVE-2016-5278 (bmo#1294677) - Heap-buffer-overflow in     nsBMPEncoder::AddImageFrame CVE-2016-5279 (bmo#1249522)
    - Full local path of files is available to web pages     after drag and drop CVE-2016-5280 (bmo#1289970) -     Use-after-free in     mozilla::nsTextNodeDirectionalityMap::RemoveElementFromM     ap CVE-2016-5281 (bmo#1284690) - use-after-free in     DOMSVGLength CVE-2016-5282 (bmo#932335) - Don't allow     content to request favicons from non-whitelisted schemes     CVE-2016-5283 (bmo#928187) - <iframe src> fragment     timing attack can reveal cross-origin data CVE-2016-5284     (bmo#1303127) - Add-on update site certificate pin     expiration CVE-2016-5256 - Memory safety bugs fixed in     Firefox 49 CVE-2016-5257 - Memory safety bugs fixed in     Firefox 49 and Firefox ESR 45.4

  - requires NSS 3.25

  - Mozilla Firefox 48.0.2 :

  - Mitigate a startup crash issue caused on Windows     (bmo#1291738)

    mozilla-nss was updated to NSS 3.25. New functionality :

  - Implemented DHE key agreement for TLS 1.3

  - Added support for ChaCha with TLS 1.3

  - Added support for TLS 1.2 ciphersuites that use SHA384     as the PRF

  - In previous versions, when using client authentication     with TLS 1.2, NSS only supported certificate_verify     messages that used the same signature hash algorithm as     used by the PRF. This limitation has been removed.

  - Several functions have been added to the public API of     the NSS Cryptoki Framework. New functions :

  - NSSCKFWSlot_GetSlotID

  - NSSCKFWSession_GetFWSlot

  - NSSCKFWInstance_DestroySessionHandle

  - NSSCKFWInstance_FindSessionHandle Notable changes :

  - An SSL socket can no longer be configured to allow both     TLS 1.3 and SSLv3

  - Regression fix: NSS no longer reports a failure if an     application attempts to disable the SSLv2 protocol.

  - The list of trusted CA certificates has been updated to     version 2.8

  - The following CA certificate was Removed Sonera Class1     CA

  - The following CA certificates were Added Hellenic     Academic and Research Institutions RootCA 2015 Hellenic     Academic and Research Institutions ECC RootCA 2015     Certplus Root CA G1 Certplus Root CA G2 OpenTrust Root     CA G1 OpenTrust Root CA G2 OpenTrust Root CA G3

This update for MozillaFirefox and mozilla-nss fixes the following issues :

MozillaFirefox was updated to version 49.0 (boo#999701)

  - New features

  - Updated Firefox Login Manager to allow HTTPS pages to     use saved HTTP logins.

  - Added features to Reader Mode that make it easier on the     eyes and the ears

  - Improved video performance for users on systems that     support SSE3 without hardware acceleration

  - Added context menu controls to HTML5 audio and video     that let users loops files or play files at 1.25x speed

  - Improvements in about:memory reports for tracking font     memory usage

  - Security related fixes

  - MFSA 2016-85 CVE-2016-2827 (bmo#1289085) - Out-of-bounds     read in mozilla::net::IsValidReferrerPolicy     CVE-2016-5270 (bmo#1291016) - Heap-buffer-overflow in     nsCaseTransformTextRunFactory::TransformString     CVE-2016-5271 (bmo#1288946) - Out-of-bounds read in     PropertyProvider::GetSpacingInternal CVE-2016-5272     (bmo#1297934) - Bad cast in nsImageGeometryMixin     CVE-2016-5273 (bmo#1280387) - crash in     mozilla::a11y::HyperTextAccessible::GetChildOffset     CVE-2016-5276 (bmo#1287721) - Heap-use-after-free in     mozilla::a11y::DocAccessible::ProcessInvalidationList     CVE-2016-5274 (bmo#1282076) - use-after-free in     nsFrameManager::CaptureFrameState CVE-2016-5277     (bmo#1291665) - Heap-use-after-free in     nsRefreshDriver::Tick CVE-2016-5275 (bmo#1287316) -     global-buffer-overflow in     mozilla::gfx::FilterSupport::ComputeSourceNeededRegions     CVE-2016-5278 (bmo#1294677) - Heap-buffer-overflow in     nsBMPEncoder::AddImageFrame CVE-2016-5279 (bmo#1249522)
    - Full local path of files is available to web pages     after drag and drop CVE-2016-5280 (bmo#1289970) -     Use-after-free in     mozilla::nsTextNodeDirectionalityMap::RemoveElementFromM     ap CVE-2016-5281 (bmo#1284690) - use-after-free in     DOMSVGLength CVE-2016-5282 (bmo#932335) - Don't allow     content to request favicons from non-whitelisted schemes     CVE-2016-5283 (bmo#928187) - <iframe src> fragment     timing attack can reveal cross-origin data CVE-2016-5284     (bmo#1303127) - Add-on update site certificate pin     expiration CVE-2016-5256 - Memory safety bugs fixed in     Firefox 49 CVE-2016-5257 - Memory safety bugs fixed in     Firefox 49 and Firefox ESR 45.4

  - requires NSS 3.25

  - Mozilla Firefox 48.0.2 :

  - Mitigate a startup crash issue caused on Windows     (bmo#1291738)

mozilla-nss was updated to NSS 3.25. New functionality :

  - Implemented DHE key agreement for TLS 1.3

  - Added support for ChaCha with TLS 1.3

  - Added support for TLS 1.2 ciphersuites that use SHA384     as the PRF

  - In previous versions, when using client authentication     with TLS 1.2, NSS only supported certificate_verify     messages that used the same signature hash algorithm as     used by the PRF. This limitation has been removed.

  - Several functions have been added to the public API of     the NSS Cryptoki Framework. New functions :

  - NSSCKFWSlot_GetSlotID

  - NSSCKFWSession_GetFWSlot

  - NSSCKFWInstance_DestroySessionHandle

  - NSSCKFWInstance_FindSessionHandle Notable changes :

  - An SSL socket can no longer be configured to allow both     TLS 1.3 and SSLv3

  - Regression fix: NSS no longer reports a failure if an     application attempts to disable the SSLv2 protocol.

  - The list of trusted CA certificates has been updated to     version 2.8

  - The following CA certificate was Removed Sonera Class1     CA

  - The following CA certificates were Added Hellenic     Academic and Research Institutions RootCA 2015 Hellenic     Academic and Research Institutions ECC RootCA 2015     Certplus Root CA G1 Certplus Root CA G2 OpenTrust Root     CA G1 OpenTrust Root CA G2 OpenTrust Root CA G3

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3076-1 advisory.

    Atte Kettunen discovered an out-of-bounds read when handling certain Content Security Policy (CSP)     directives in some circumstances. If a user were tricked in to opening a specially crafted website, an     attacker could potentially exploit this to cause a denial of service via application crash.
    (CVE-2016-2827)

    Christoph Diehl, Christian Holler, Gary Kwong, Nathan Froyd, Honza Bambas, Seth Fowler, Michael Smith,     Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, and Carsten Book     discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service via application     crash, or execute arbitrary code. (CVE-2016-5256, CVE-2016-5257)

    Atte Kettunen discovered a heap buffer overflow during text conversion with some unicode characters. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5270)

    Abhishek Arya discovered an out of bounds read during the processing of text runs in some circumstances.
    If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit     this to cause a denial of service via application crash. (CVE-2016-5271)

    Abhishek Arya discovered a bad cast when processing layout with input elements in some circumstances. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5272)

    A crash was discovered in accessibility. If a user were tricked in to opening a specially crafted website,     an attacker could potentially exploit this to execute arbitrary code. (CVE-2016-5273)

    A use-after-free was discovered in web animations during restyling. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit this to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-5274)

    A buffer overflow was discovered when working with empty filters during canvas rendering. If a user were     tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a     denial of service via application crash, or execute arbitrary code. (CVE-2016-5275)

    A use-after-free was discovered in accessibility. If a user were tricked in to opening a specially crafted     website, an attacker could potentially exploit this to cause a denial of service via application crash, or     execute arbitrary code. (CVE-2016-5276)

    A use-after-free was discovered in web animations when destroying a timeline. If a user were tricked in to     opening a specially crafted website, an attacker could potentially exploit this to cause a denial of     service via application crash, or execute arbitrary code. (CVE-2016-5277)

    A buffer overflow was discovered when encoding image frames to images in some circumstances. If a user     were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5278)

    Rafael Gieschke discovered that the full path of files is available to web pages after a drag and drop     operation. An attacker could potentially exploit this to obtain sensitive information. (CVE-2016-5279)

    Mei Wang discovered a use-after-free when changing text direction. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit this to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-5280)

    Brian Carpenter discovered a use-after-free when manipulating SVG content in some circumstances. If a user     were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5281)

    Richard Newman discovered that favicons can be loaded through protocols not in the allowlist, such as     jar:. (CVE-2016-5282)

    Gavin Sharp discovered a timing attack vulnerability involving document resizes and link colours. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     obtain sensitive information. (CVE-2016-5283)

    An issue was discovered with the preloaded Public Key Pinning (HPKP). If a machine-in-the-middle (MITM)     attacker was able to obtain a fraudulent certificate for a Mozilla site, they could exploit this by     providing malicious addon updates. (CVE-2016-5284)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Mozilla Firefox installed on the remote Windows host is prior to 49.0. It is, therefore, affected by multiple vulnerabilities :

  - An out-of-bounds read error exists within file     dom/security/nsCSPParser.cpp when handling content     security policies (CSP) containing empty referrer     directives. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition.
    (CVE-2016-2827)

  - Multiple memory safety issues exist that allow an     unauthenticated, remote attacker to potentially execute     arbitrary code. (CVE-2016-5256, CVE-2016-5257)

  - A heap buffer overflow condition exists in the     nsCaseTransformTextRunFactory::TransformString()     function in layout/generic/nsTextRunTransformations.cpp     when converting text containing certain Unicode     characters. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2016-5270)

  - An out-of-bounds read error exists in the     nsCSSFrameConstructor::GetInsertionPrevSibling()     function in file layout/base/nsCSSFrameConstructor.cpp     when handling text runs. An unauthenticated, remote     attacker can exploit this to disclose memory contents.
    (CVE-2016-5271)

  - A type confusion error exists within file     layout/forms/nsRangeFrame.cpp when handling layout with     input elements. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2016-5272)

  - An unspecified flaw exists in the     HyperTextAccessible::GetChildOffset() function that     allows an unauthenticated, remote attacker to execute     arbitrary code. (CVE-2016-5273)

  - A use-after-free error exists within file     layout/style/nsRuleNode.cpp when handling web animations     during restyling. An unauthenticated, remote attacker     can exploit this to execute arbitrary code.
    (CVE-2016-5274)

  - A buffer overflow condition exists in the     FilterSupport::ComputeSourceNeededRegions() function     when handling empty filters during canvas rendering. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5275)

  - A use-after-free error exists in the     DocAccessible::ProcessInvalidationList() function within     file accessible/generic/DocAccessible.cpp when setting     an aria-owns attribute. An unauthenticated, remote     attacker can exploit this to execute arbitrary code.
    (CVE-2016-5276)

  - A use-after-free error exists in the     nsRefreshDriver::Tick() function when handling web     animations destroying a timeline. An unauthenticated,     remote attacker can exploit this to execute arbitrary     code. (CVE-2016-5277)

  - A buffer overflow condition exists in the     nsBMPEncoder::AddImageFrame() function within file     dom/base/ImageEncoder.cpp when encoding image frames to     images. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2016-5278)

  - A flaw exists that is triggered when handling     drag-and-drop events for files. An unauthenticated,     remote attacker can exploit this disclose the full local     file path. (CVE-2016-5279)

  - A use-after-free error exists in the     nsTextNodeDirectionalityMap::RemoveElementFromMap()     function within file dom/base/DirectionalityUtils.cpp     when handling changing of text direction. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5280)

  - A use-after-free error exists when handling SVG format     content that is being manipulated through script code.
    An unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5281)

  - A flaw exists when handling content that requests     favicons from non-whitelisted schemes that are using     certain URI handlers. An unauthenticated, remote     attacker can exploit this to bypass intended     restrictions. (CVE-2016-5282)

  - A flaw exists that is related to the handling of iframes     that allow an unauthenticated, remote attacker to     conduct an 'iframe src' fragment timing attack,     resulting in disclosure of cross-origin data.
    (CVE-2016-5283)

  - A flaw exists due to the certificate pinning policy for     built-in sites (e.g., addons.mozilla.org) not being     honored when pins have expired. A man-in-the-middle     (MitM) attacker can exploit this to generate a trusted     certificate, which could be used to conduct spoofing     attacks. (CVE-2016-5284)

The version of Mozilla Firefox installed on the remote Mac OS X host is prior to 49.0. It is, therefore, affected by multiple vulnerabilities :

  - An out-of-bounds read error exists within file     dom/security/nsCSPParser.cpp when handling content     security policies (CSP) containing empty referrer     directives. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition.
    (CVE-2016-2827)

  - Multiple memory safety issues exist that allow an     unauthenticated, remote attacker to potentially execute     arbitrary code. (CVE-2016-5256, CVE-2016-5257)

  - A heap buffer overflow condition exists in the     nsCaseTransformTextRunFactory::TransformString()     function in layout/generic/nsTextRunTransformations.cpp     when converting text containing certain Unicode     characters. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2016-5270)

  - An out-of-bounds read error exists in the     nsCSSFrameConstructor::GetInsertionPrevSibling()     function in file layout/base/nsCSSFrameConstructor.cpp     when handling text runs. An unauthenticated, remote     attacker can exploit this to disclose memory contents.
    (CVE-2016-5271)

  - A type confusion error exists within file     layout/forms/nsRangeFrame.cpp when handling layout with     input elements. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2016-5272)

  - An unspecified flaw exists in the     HyperTextAccessible::GetChildOffset() function that     allows an unauthenticated, remote attacker to execute     arbitrary code. (CVE-2016-5273)

  - A use-after-free error exists within file     layout/style/nsRuleNode.cpp when handling web animations     during restyling. An unauthenticated, remote attacker     can exploit this to execute arbitrary code.
    (CVE-2016-5274)

  - A buffer overflow condition exists in the     FilterSupport::ComputeSourceNeededRegions() function     when handling empty filters during canvas rendering. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5275)

  - A use-after-free error exists in the     DocAccessible::ProcessInvalidationList() function within     file accessible/generic/DocAccessible.cpp when setting     an aria-owns attribute. An unauthenticated, remote     attacker can exploit this to execute arbitrary code.
    (CVE-2016-5276)

  - A use-after-free error exists in the     nsRefreshDriver::Tick() function when handling web     animations destroying a timeline. An unauthenticated,     remote attacker can exploit this to execute arbitrary     code. (CVE-2016-5277)

  - A buffer overflow condition exists in the     nsBMPEncoder::AddImageFrame() function within file     dom/base/ImageEncoder.cpp when encoding image frames to     images. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2016-5278)

  - A flaw exists that is triggered when handling     drag-and-drop events for files. An unauthenticated,     remote attacker can exploit this disclose the full local     file path. (CVE-2016-5279)

  - A use-after-free error exists in the     nsTextNodeDirectionalityMap::RemoveElementFromMap()     function within file dom/base/DirectionalityUtils.cpp     when handling changing of text direction. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5280)

  - A use-after-free error exists when handling SVG format     content that is being manipulated through script code.
    An unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5281)

  - A flaw exists when handling content that requests     favicons from non-whitelisted schemes that are using     certain URI handlers. An unauthenticated, remote     attacker can exploit this to bypass intended     restrictions. (CVE-2016-5282)

  - A flaw exists that is related to the handling of iframes     that allow an unauthenticated, remote attacker to     conduct an 'iframe src' fragment timing attack,     resulting in disclosure of cross-origin data.
    (CVE-2016-5283)

  - A flaw exists due to the certificate pinning policy for     built-in sites (e.g., addons.mozilla.org) not being     honored when pins have expired. A man-in-the-middle     (MitM) attacker can exploit this to generate a trusted     certificate, which could be used to conduct spoofing     attacks. (CVE-2016-5284)

Mozilla Foundation reports :

CVE-2016-2827 - Out-of-bounds read in mozilla::net::IsValidReferrerPolicy [low]

CVE-2016-5256 - Memory safety bugs fixed in Firefox 49 [critical]

CVE-2016-5257 - Memory safety bugs fixed in Firefox 49 and Firefox ESR 45.4 [critical]

CVE-2016-5270 - Heap-buffer-overflow in nsCaseTransformTextRunFactory::TransformString [high]

CVE-2016-5271 - Out-of-bounds read in PropertyProvider::GetSpacingInternal [low]

CVE-2016-5272 - Bad cast in nsImageGeometryMixin [high]

CVE-2016-5273 - crash in mozilla::a11y::HyperTextAccessible::GetChildOffset [high]

CVE-2016-5274 - use-after-free in nsFrameManager::CaptureFrameState [high]

CVE-2016-5275 - global-buffer-overflow in mozilla::gfx::FilterSupport::ComputeSourceNeededRegions [critical]

CVE-2016-5276 - Heap-use-after-free in mozilla::a11y::DocAccessible::ProcessInvalidationList [high]

CVE-2016-5277 - Heap-use-after-free in nsRefreshDriver::Tick [high]

CVE-2016-5278 - Heap-buffer-overflow in nsBMPEncoder::AddImageFrame [critical]

CVE-2016-5279 - Full local path of files is available to web pages after drag and drop [moderate]

CVE-2016-5280 - Use-after-free in mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap [high]

CVE-2016-5281 - use-after-free in DOMSVGLength [high]

CVE-2016-5282 - Don't allow content to request favicons from non-whitelisted schemes [moderate]

CVE-2016-5283 - <iframe src> fragment timing attack can reveal cross-origin data [high]

CVE-2016-5284 - Add-on update site certificate pin expiration [high]

ID	Name	Product	Family	Severity
117941	Mozilla Firefox < 49 Multiple Vulnerabilities	Nessus	Windows	critical
117940	Mozilla Firefox < 49 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	critical
96276	GLSA-201701-15 : Mozilla Firefox, Thunderbird: Multiple vulnerabilities (SWEET32)	Nessus	Gentoo Local Security Checks	critical
9624	Mozilla Firefox < 49.0 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	high
93732	openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-1128)	Nessus	SuSE Local Security Checks	critical
93705	openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-1119)	Nessus	SuSE Local Security Checks	critical
93683	Ubuntu 14.04 LTS / 16.04 LTS : Firefox vulnerabilities (USN-3076-1)	Nessus	Ubuntu Local Security Checks	critical
93662	Mozilla Firefox < 49.0 Multiple Vulnerabilities	Nessus	Windows	critical
93660	Mozilla Firefox < 49.0 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	critical
93614	FreeBSD : mozilla -- multiple vulnerabilities (2c57c47e-8bb3-4694-83c8-9fc3abad3964)	Nessus	FreeBSD Local Security Checks	critical

Detections

Analytics

CVE-2016-5273

high

Tenable Plugins

critical

critical

critical

high

critical

critical

critical

critical

critical

critical