An update for firefox is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Mozilla Firefox is an open source web browser.

This update upgrades Firefox to version 52.1.0 ESR.

Security Fix(es) :

* Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2017-5429, CVE-2017-5432, CVE-2017-5433, CVE-2017-5434, CVE-2017-5435, CVE-2017-5436, CVE-2017-5437, CVE-2017-5438, CVE-2017-5439, CVE-2017-5440, CVE-2017-5441, CVE-2017-5442, CVE-2017-5443, CVE-2017-5444, CVE-2017-5445, CVE-2017-5446, CVE-2017-5447, CVE-2017-5448, CVE-2017-5449, CVE-2017-5459, CVE-2017-5460, CVE-2017-5464, CVE-2017-5465, CVE-2017-5469)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Mozilla developers and community, Nils, Holger Fuhrmannek, Atte Kettunen, Huzaifa Sidhpurwala, Nicolas GrA(c)goire, Chamal De Silva, Chun Han Hsiao, Ivan Fratric of Google Project Zero, Anonymous working with Trend Micro's Zero Day Initiative, and Petr Cerny as the original reporters.

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Mozilla Thunderbird installed on the remote macOS or Mac OS X host is prior to 52.1. It is, therefore, affected by multiple vulnerabilities :

  - Multiple flaws exist in the Libevent library, within     files evdns.c and evutil.c, due to improper validation     of input when handling IP address strings, empty base     name strings, and DNS packets. An unauthenticated,     remote attacker can exploit these to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2016-10195, CVE-2016-10196, CVE-2016-10197)

  - Multiple memory corruption issues exist that allow an     unauthenticated, remote attacker to execute arbitrary     code. (CVE-2017-5429, CVE-2017-5430)

  - A use-after-free error exists in input text selection     that allows an unauthenticated, remote attacker to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5432)

  - A use-after-free error exists in the SMIL animation     functions when handling animation elements. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5433)

  - A use-after-free error exists when redirecting focus     handling that allows an unauthenticated, remote attacker     to cause a denial of service condition or the execution     of arbitrary code. (CVE-2017-5434)

  - A use-after-free error exists in design mode     interactions when handling transaction processing in     the editor. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition or     the execution of arbitrary code. (CVE-2017-5435)

  - An out-of-bounds write error exists in the Graphite 2     library when handling specially crafted Graphite fonts.
    An unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5436)

  - A use-after-free error exists in the nsAutoPtr()     function during XSLT processing due to the result     handler being held by a freed handler. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5438)

  - A use-after-free error exists in the Length() function     in nsTArray when handling template parameters during     XSLT processing. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition or     the execution of arbitrary code. (CVE-2017-5439)

  - A use-after-free error exists in the txExecutionState     destructor when processing XSLT content. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5440)

  - A use-after-free error exists when holding a selection     during scroll events. An unauthenticated, remote     attacker can exploit this to cause a denial of service     condition or the execution of arbitrary code.
    (CVE-2017-5441)

  - A use-after-free error exists when changing styles in     DOM elements that allows an unauthenticated, remote     attacker to cause a denial of service condition or the     execution of arbitrary code. (CVE-2017-5442)

  - An out-of-bounds write error exists while decoding     improperly formed BinHex format archives that allows an     unauthenticated, remote attacker to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2017-5443)

  - A buffer overflow condition exists while parsing     application/http-index-format format content due to     improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this, via     improperly formatted data, to disclose out-of-bounds     memory content. (CVE-2017-5444)

  - A flaw exists in nsDirIndexParser.cpp when parsing     application/http-index-format format content in which     uninitialized values are used to create an array. An     unauthenticated, remote attacker can exploit this to     disclose memory contents. (CVE-2017-5445)

  - An out-of-bounds read error exists when handling HTTP/2     DATA connections to a server that sends DATA frames with     incorrect content. An unauthenticated, remote attacker     can exploit to cause a denial of service condition or     the disclosure of memory contents. (CVE-2017-5446)

  - An out-of-bounds read error exists when processing glyph     widths during text layout. An unauthenticated, remote     attacker can exploit this to cause a denial of service     condition or the disclosure of memory contents.
    (CVE-2017-5447)

  - A flaw exists when handling bidirectional Unicode text     in conjunction with CSS animations that allows an     unauthenticated, remote attacker to cause a denial of     service condition or the execution or arbitrary code.
    (CVE-2017-5449)

  - A flaw exists in the handling of specially crafted     'onblur' events. An unauthenticated, remote attacker can     exploit this, via a specially crafted event, to spoof     the address bar, making the loaded site appear to be     different from the one actually loaded. (CVE-2017-5451)

  - A flaw exists in the FileSystemSecurity::Forget()     function within file FileSystemSecurity.cpp when using     the File Picker due to improper sanitization of input     containing path traversal sequences. An unauthenticated,     remote attacker can exploit this to bypass file system     access protections in the sandbox and read arbitrary     files on the local file system. (CVE-2017-5454)

  - A buffer overflow condition exists in WebGL when     handling web content due to improper validation of     certain input. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition or     the execution of arbitrary code. (CVE-2017-5459)

  - A use-after-free error exists in frame selection when     handling a specially crafted combination of script     content and key presses by the user. An unauthenticated,     remote attacker can exploit this to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2017-5460)

  - An out-of-bounds write error exists in the Network     Security Services (NSS) library during Base64 decoding     operations due to insufficient memory being allocated to     a buffer. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition or     the execution of arbitrary code. (CVE-2017-5461)

  - A flaw exists in the Network Security Services (NSS)     library during DRBG number generation due to the     internal state V not correctly carrying bits over. An     unauthenticated, remote attacker can exploit this to     potentially cause predictable random number generation.
    (CVE-2017-5462)

  - A flaw exists when making changes to DOM content in the     accessibility tree due to improper validation of certain     input, which can lead to the DOM tree becoming out of     sync with the accessibility tree. An unauthenticated,     remote attacker can exploit this to corrupt memory,     resulting in a denial of service condition or the     execution of arbitrary code. (CVE-2017-5464)

  - An out-of-bounds read error exists in ConvolvePixel when     processing SVG content, which allows for otherwise     inaccessible memory being copied into SVG graphic     content. An unauthenticated, remote attacker can exploit     this to disclose memory contents or cause a denial of     service condition. (CVE-2017-5465)

  - A cross-site scripting (XSS) vulnerability exists due to     improper handling of data:text/html URL redirects when     a reload is triggered, which causes the reloaded     data:text/html page to have its origin set incorrectly.
    An unauthenticated, remote attacker can exploit this,     via a specially crafted request, to execute arbitrary     script code in a user's browser session. (CVE-2017-5466)

  - A memory corruption issue exists when rendering Skia     content outside of the bounds of a clipping region due     to improper validation of certain input. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5467)

  - A buffer overflow condition exists in the FLEX generated     code due to improper validation of user-supplied input.
    An unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2017-5469)

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2017-1106 advisory.

    [52.1.0-2.0.1]
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [52.1.0-2]
    - Update to 52.1.0 ESR (Build3)

    [52.1.0-1]
    - Update to 52.1.0 ESR

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

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

This update upgrades Firefox to version 52.1.0 ESR.

Security Fix(es) :

  - Multiple flaws were found in the processing of malformed     web content. A web page containing malicious content     could cause Firefox to crash or, potentially, execute     arbitrary code with the privileges of the user running     Firefox. (CVE-2017-5429, CVE-2017-5432, CVE-2017-5433,     CVE-2017-5434, CVE-2017-5435, CVE-2017-5436,     CVE-2017-5438, CVE-2017-5439,     CVE-2017-5440, CVE-2017-5441, CVE-2017-5442,     CVE-2017-5443, CVE-2017-5444, CVE-2017-5445,     CVE-2017-5446, CVE-2017-5447, CVE-2017-5448,     CVE-2017-5449, CVE-2017-5459, CVE-2017-5460,     CVE-2017-5464, CVE-2017-5465, CVE-2017-5469)

The remote host is affected by the vulnerability described in GLSA-201802-03 (Mozilla Firefox: Multiple vulnerabilities)

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

    A remote attacker could entice a user to view a specially crafted web       page, possibly resulting in the execution of arbitrary code with the       privileges of the process or a Denial of Service condition. Furthermore,       a remote attacker may be able to perform Man-in-the-Middle attacks,       obtain sensitive information, spoof the address bar, conduct clickjacking       attacks, bypass security restrictions and protection mechanisms, or have       other unspecified impact.
  Workaround :

    There is no known workaround at this time.

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

  - Fixes in Firefox ESR 52.2 (bsc#1043960,MFSA 2017-16)

  - CVE-2017-7758: Out-of-bounds read in Opus encoder

  - CVE-2017-7749: Use-after-free during docshell reloading

  - CVE-2017-7751: Use-after-free with content viewer     listeners

  - CVE-2017-5472: Use-after-free using destroyed node when     regenerating trees

  - CVE-2017-5470: Memory safety bugs fixed in Firefox 54     and Firefox ESR 52.2

  - CVE-2017-7752: Use-after-free with IME input

  - CVE-2017-7750: Use-after-free with track elements

  - CVE-2017-7768: 32 byte arbitrary file read through     Mozilla Maintenance Service

  - CVE-2017-7778: Vulnerabilities in the Graphite 2 library

  - CVE-2017-7754: Out-of-bounds read in WebGL with     ImageInfo object

  - CVE-2017-7755: Privilege escalation through Firefox     Installer with same directory DLL files

  - CVE-2017-7756: Use-after-free and use-after-scope     logging XHR header errors

  - CVE-2017-7757: Use-after-free in IndexedDB

  - CVE-2017-7761: File deletion and privilege escalation     through Mozilla Maintenance Service helper.exe     application

  - CVE-2017-7763: Mac fonts render some unicode characters     as spaces

  - CVE-2017-7765: Mark of the Web bypass when saving     executable files

  - CVE-2017-7764: Domain spoofing with combination of     Canadian Syllabics and other unicode blocks

  - update to Firefox ESR 52.1 (bsc#1035082,MFSA 2017-12)

  - CVE-2016-10196: Vulnerabilities in Libevent library

  - CVE-2017-5443: Out-of-bounds write during BinHex     decoding

  - CVE-2017-5429: Memory safety bugs fixed in Firefox 53,     Firefox ESR 45.9, and Firefox ESR 52.1

  - CVE-2017-5464: Memory corruption with accessibility and     DOM manipulation

  - CVE-2017-5465: Out-of-bounds read in ConvolvePixel

  - CVE-2017-5466: Origin confusion when reloading isolated     data:text/html URL

  - CVE-2017-5467: Memory corruption when drawing Skia     content

  - CVE-2017-5460: Use-after-free in frame selection

  - CVE-2017-5461: Out-of-bounds write in Base64 encoding in     NSS

  - CVE-2017-5448: Out-of-bounds write in ClearKeyDecryptor

  - CVE-2017-5449: Crash during bidirectional unicode     manipulation with animation

  - CVE-2017-5446: Out-of-bounds read when HTTP/2 DATA     frames are sent with incorrect data

  - CVE-2017-5447: Out-of-bounds read during glyph     processing

  - CVE-2017-5444: Buffer overflow while parsing     application/http-index-format content

  - CVE-2017-5445: Uninitialized values used while parsing     application/http- index-format content

  - CVE-2017-5442: Use-after-free during style changes

  - CVE-2017-5469: Potential Buffer overflow in     flex-generated code

  - CVE-2017-5440: Use-after-free in txExecutionState     destructor during XSLT processing

  - CVE-2017-5441: Use-after-free with selection during     scroll events

  - CVE-2017-5439: Use-after-free in nsTArray Length()     during XSLT processing

  - CVE-2017-5438: Use-after-free in nsAutoPtr during XSLT     processing

  - CVE-2017-5436: Out-of-bounds write with malicious font     in Graphite 2

  - CVE-2017-5435: Use-after-free during transaction     processing in the editor

  - CVE-2017-5434: Use-after-free during focus handling

  - CVE-2017-5433: Use-after-free in SMIL animation     functions

  - CVE-2017-5432: Use-after-free in text input selection

  - CVE-2017-5430: Memory safety bugs fixed in Firefox 53     and Firefox ESR 52.1

  - CVE-2017-5459: Buffer overflow in WebGL

  - CVE-2017-5462: DRBG flaw in NSS

  - CVE-2017-5455: Sandbox escape through internal feed     reader APIs

  - CVE-2017-5454: Sandbox escape allowing file system read     access through file picker

  - CVE-2017-5456: Sandbox escape allowing local file system     access

  - CVE-2017-5451: Addressbar spoofing with onblur event

  - General

  - CVE-2015-5276: Fix for C++11 std::random_device short     reads (bsc#945842) Bugfixes :

  - workaround for Firefox hangs (bsc#1031485, bsc#1025108)

  - Update to gcc-5-branch head.

  - Includes fixes for (bsc#966220), (bsc#962765),     (bsc#964468), (bsc#939460), (bsc#930496), (bsc#930392)     and (bsc#955382).

  - Add fix to revert accidential libffi ABI breakage on     AARCH64. (bsc#968771)

  - Build s390[x] with --with-tune=z9-109 --with-arch=z900     on SLE11 again. (bsc#954002)

  - Fix libffi include install. (bsc#935510)

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.

According to the versions of the firefox package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Multiple flaws were found in the processing of     malformed web content. A web page containing malicious     content could cause Firefox to crash or, potentially,     execute arbitrary code with the privileges of the user     running Firefox. (CVE-2017-5429, CVE-2017-5430,     CVE-2017-5432, CVE-2017-5433, CVE-2017-5434,     CVE-2017-5435, CVE-2017-5436, CVE-2017-5438,     CVE-2017-5439, CVE-2017-5440,     CVE-2017-5441, CVE-2017-5442, CVE-2017-5443,     CVE-2017-5444, CVE-2017-5445, CVE-2017-5446,     CVE-2017-5447, CVE-2017-5448, CVE-2017-5449,     CVE-2017-5451, CVE-2017-5454, CVE-2017-5455,     CVE-2017-5456, CVE-2017-5459, CVE-2017-5460,     CVE-2017-5464, CVE-2017-5465, CVE-2017-5466,     CVE-2017-5467,     CVE-2017-5469,CVE-2016-10195,CVE-2016-10196,CVE-2016-10     197)

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

According to the versions of the firefox package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Multiple flaws were found in the processing of     malformed web content. A web page containing malicious     content could cause Firefox to crash or, potentially,     execute arbitrary code with the privileges of the user     running Firefox. (CVE-2017-5429, CVE-2017-5430,     CVE-2017-5432, CVE-2017-5433, CVE-2017-5434,     CVE-2017-5435, CVE-2017-5436,     CVE-2017-5438, CVE-2017-5439, CVE-2017-5440,     CVE-2017-5441, CVE-2017-5442, CVE-2017-5443,     CVE-2017-5444, CVE-2017-5445, CVE-2017-5446,     CVE-2017-5447, CVE-2017-5448, CVE-2017-5449,     CVE-2017-5451, CVE-2017-5454, CVE-2017-5455,     CVE-2017-5456, CVE-2017-5459, CVE-2017-5460,     CVE-2017-5464, CVE-2017-5465, CVE-2017-5466,     CVE-2017-5467,     CVE-2017-5469,CVE-2016-10195,CVE-2016-10196,CVE-2016-10     197)

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

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3278-1 advisory.

    Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially     crafted message, an attacker could potentially exploit these to read uninitialized memory, cause a denial     of service via application crash, or execute arbitrary code. (CVE-2017-5429, CVE-2017-5430, CVE-2017-5436,     CVE-2017-5443, CVE-2017-5444, CVE-2017-5445, CVE-2017-5446, CVE-2017-5447, CVE-2017-5461, CVE-2017-5467)

    Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially     crafted website in a browsing context, an attacker could potentially exploit these to spoof the addressbar     contents, conduct cross-site scripting (XSS) attacks, cause a denial of service via application crash, or     execute arbitrary code. (CVE-2017-5432, CVE-2017-5433, CVE-2017-5434, CVE-2017-5435, CVE-2017-5437,     CVE-2017-5438, CVE-2017-5439, CVE-2017-5440, CVE-2017-5441, CVE-2017-5442, CVE-2017-5449, CVE-2017-5451,     CVE-2017-5454, CVE-2017-5459, CVE-2017-5460, CVE-2017-5464, CVE-2017-5465, CVE-2017-5466, CVE-2017-5469,     CVE-2016-10195, CVE-2016-10196, CVE-2016-10197)

    A flaw was discovered in the DRBG number generation in NSS. If an attacker were able to perform a machine-     in-the-middle attack, this flaw could potentially be exploited to view sensitive information.
    (CVE-2017-5462)

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.

Multiple security issues have been found in the Mozilla Firefox web browser: Multiple memory safety errors, use-after-frees, buffer overflows and other implementation errors may lead to the execution of arbitrary code, information disclosure or denial of service.

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 52.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2017-13 advisory.

  - Fixed potential buffer overflows in generated Firefox code due to     [CVE-2016-6354](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6354) issue in Flex.
    (CVE-2017-5469)

  - A use-after-free vulnerability in SMIL animation functions occurs when pointers to animation elements in     an array are dropped from the animation controller while still in use. This results in a potentially     exploitable crash. (CVE-2017-5433)

  - A use-after-free vulnerability occurs during transaction processing in the editor during design mode     interactions. This results in a potentially exploitable crash. (CVE-2017-5435)

  - An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This     results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as     Mozilla products. (CVE-2017-5436)

  - An out-of-bounds write during Base64 decoding operation in the Network Security Services (NSS) library due     to insufficient memory being allocated to the buffer. This results in a potentially exploitable crash. The     NSS library has been updated to fix this issue to address this issue and Firefox ESR 52.1 has been updated     with NSS version 3.28.4. (CVE-2017-5461)

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

ID	Name	Product	Family	Published	Updated	Severity
101455	Virtuozzo 6 : firefox (VZLSA-2017-1104)	Nessus	Virtuozzo Local Security Checks	7/13/2017	12/11/2025	critical
99967	Mozilla Thunderbird < 52.1 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	5/3/2017	11/13/2019	critical
99565	Oracle Linux 7 : firefox (ELSA-2017-1106)	Nessus	Oracle Linux Local Security Checks	4/21/2017	8/29/2025	critical
99576	Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20170420)	Nessus	Scientific Linux Local Security Checks	4/21/2017	12/23/2025	critical
106884	GLSA-201802-03 : Mozilla Firefox: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2/20/2018	10/29/2025	critical
102694	SUSE SLES11 Security Update : MozillaFirefox, MozillaFirefox-branding-SLED, firefox-gcc5, mozilla-nss (SUSE-SU-2017:2235-1)	Nessus	SuSE Local Security Checks	8/23/2017	11/26/2025	critical
100687	EulerOS 2.0 SP1 : firefox (EulerOS-SA-2017-1092)	Nessus	Huawei Local Security Checks	6/9/2017	12/16/2025	critical
100688	EulerOS 2.0 SP2 : firefox (EulerOS-SA-2017-1093)	Nessus	Huawei Local Security Checks	6/9/2017	12/16/2025	critical
100249	Ubuntu 14.04 LTS / 16.04 LTS : Thunderbird vulnerabilities (USN-3278-1)	Nessus	Ubuntu Local Security Checks	5/17/2017	8/27/2024	critical
99485	Debian DSA-3831-1 : firefox-esr - security update	Nessus	Debian Local Security Checks	4/20/2017	12/25/2025	critical
275620	Mozilla Thunderbird < 52.1	Nessus	MacOS X Local Security Checks	11/18/2025	11/18/2025	critical

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