The version of Firefox ESR 24.x installed on the remote host is prior to 24.7. It is, therefore, affected by the following vulnerabilities :

  - When a pair of NSSCertificate structures are added to a     trust domain and then one of them is removed during use,     a use-after-free error occurs which may cause the     application to crash. This crash is potentially     exploitable. (CVE-2014-1544)

  - There are multiple memory safety hazards within the     browser engine. These hazards may lead to memory     corruption vulnerabilities, which may allow attackers     to execute arbitrary code. (CVE-2014-1547,     CVE-2014-1548)

  - Triggering the FireOnStateChange event has the     potential to crash the application. This may lead to     a use-after-free and an exploitable crash.
    (CVE-2014-1555)

  - When using the Cesium JavaScript library to generate     WebGL content, the application may crash. This crash     is potentially exploitable. (CVE-2014-1556)

  - There is a flaw in the Skia library when scaling images     of high quality. If the image data is discarded while     being processed, the library may crash. This crash     is potentially exploitable. (CVE-2014-1557)

The version of Thunderbird 24.x installed on the remote host is a version prior to 24.7. It is, therefore, affected by the following vulnerabilities :

  - When a pair of NSSCertificate structures are added to a     trust domain and then one of them is removed during use,     a use-after-free error occurs which may cause the     application to crash. This crash is potentially     exploitable. (CVE-2014-1544)

  - There are multiple memory safety hazards within the     browser engine. These hazards may lead to memory     corruption vulnerabilities, which may allow attackers     to execute arbitrary code. (CVE-2014-1547,     CVE-2014-1548)

  - There is a potential use-after-free issue in     DirectWrite font handling. This may allow an attacker     to potentially execute arbitrary code within the context     of the user running the application. (CVE-2014-1551)

  - Triggering the FireOnStateChange event has the     potential to crash the application. This may lead to     a use-after-free and an exploitable crash.
    (CVE-2014-1555)

  - When using the Cesium JavaScript library to generate     WebGL content, the application may crash. This crash     is potentially exploitable. (CVE-2014-1556)

A race condition was found in the way NSS verified certain certificates. A remote attacker could use this flaw to crash an application using NSS or, possibly, execute arbitrary code with the privileges of the user running that application. (CVE-2014-1544)

A flaw was found in the way TLS False Start was implemented in NSS. An attacker could use this flaw to potentially return unencrypted information from the server. (CVE-2013-1740)

A race condition was found in the way NSS implemented session ticket handling as specified by RFC 5077. An attacker could use this flaw to crash an application using NSS or, in rare cases, execute arbitrary code with the privileges of the user running that application.
(CVE-2014-1490)

It was found that NSS accepted weak Diffie-Hellman Key exchange (DHKE) parameters. This could possibly lead to weak encryption being used in communication between the client and the server. (CVE-2014-1491)

An out-of-bounds write flaw was found in NSPR. A remote attacker could potentially use this flaw to crash an application using NSPR or, possibly, execute arbitrary code with the privileges of the user running that application. This NSPR flaw was not exposed to web content in any shipped version of Firefox. (CVE-2014-1545)

It was found that the implementation of Internationalizing Domain Names in Applications (IDNA) hostname matching in NSS did not follow the RFC 6125 recommendations. This could lead to certain invalid certificates with international characters to be accepted as valid.
(CVE-2014-1492)

In addition, the nss package has been upgraded to upstream version 3.16.1, and the nspr package has been upgraded to upstream version 4.10.6. These updated packages provide a number of bug fixes and enhancements over the previous versions.

After installing this update, applications using NSS or NSPR must be restarted for this update to take effect.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2014:0915 advisory.

    Network Security Services (NSS) is a set of libraries designed to support     the cross-platform development of security-enabled client and server     applications.

    A race condition was found in the way NSS verified certain certificates.
    A remote attacker could use this flaw to crash an application using NSS or,     possibly, execute arbitrary code with the privileges of the user running     that application. (CVE-2014-1544)

    Red Hat would like to thank the Mozilla project for reporting     CVE-2014-1544. Upstream acknowledges Tyson Smith and Jesse Schwartzentruber     as the original reporters.

    Users of NSS are advised to upgrade to these updated packages, which     correct this issue. After installing this update, applications using NSS     must be restarted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

In nss, a set of libraries designed to support cross-platform development of security-enabled client and server applications, Tyson Smith and Jesse Schwartzentruber discovered a use-after-free vulnerability that allows remote attackers to execute arbitrary code by triggering the improper removal of an NSSCertificate structure from a trust domain.

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

Updated nss and nspr packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having Critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Netscape Portable Runtime (NSPR) provides platform independence for non-GUI operating system facilities.

A race condition was found in the way NSS verified certain certificates. A remote attacker could use this flaw to crash an application using NSS or, possibly, execute arbitrary code with the privileges of the user running that application. (CVE-2014-1544)

A flaw was found in the way TLS False Start was implemented in NSS. An attacker could use this flaw to potentially return unencrypted information from the server. (CVE-2013-1740)

A race condition was found in the way NSS implemented session ticket handling as specified by RFC 5077. An attacker could use this flaw to crash an application using NSS or, in rare cases, execute arbitrary code with the privileges of the user running that application.
(CVE-2014-1490)

It was found that NSS accepted weak Diffie-Hellman Key exchange (DHKE) parameters. This could possibly lead to weak encryption being used in communication between the client and the server. (CVE-2014-1491)

An out-of-bounds write flaw was found in NSPR. A remote attacker could potentially use this flaw to crash an application using NSPR or, possibly, execute arbitrary code with the privileges of the user running that application. This NSPR flaw was not exposed to web content in any shipped version of Firefox. (CVE-2014-1545)

It was found that the implementation of Internationalizing Domain Names in Applications (IDNA) hostname matching in NSS did not follow the RFC 6125 recommendations. This could lead to certain invalid certificates with international characters to be accepted as valid.
(CVE-2014-1492)

Red Hat would like to thank the Mozilla project for reporting the CVE-2014-1544, CVE-2014-1490, CVE-2014-1491, and CVE-2014-1545 issues.
Upstream acknowledges Tyson Smith and Jesse Schwartzentruber as the original reporters of CVE-2014-1544, Brian Smith as the original reporter of CVE-2014-1490, Antoine Delignat-Lavaud and Karthikeyan Bhargavan as the original reporters of CVE-2014-1491, and Abhishek Arya as the original reporter of CVE-2014-1545.

In addition, the nss package has been upgraded to upstream version 3.16.1, and the nspr package has been upgraded to upstream version 4.10.6. These updated packages provide a number of bug fixes and enhancements over the previous versions. (BZ#1112136, BZ#1112135)

Users of NSS and NSPR are advised to upgrade to these updated packages, which correct these issues and add these enhancements. After installing this update, applications using NSS or NSPR must be restarted for this update to take effect.

ID	名稱	產品	系列	已發布	已更新	嚴重性
76758	Firefox ESR 24.x< 24.7 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	2014/7/24	2026/3/3	critical
76764	Mozilla Thunderbird 24.x < 24.7 Multiple Vulnerabilities	Nessus	Windows	2014/7/24	2019/11/26	critical
76702	Scientific Linux Security Update : nss and nspr on SL6.x i386/x86_64 (20140722)	Nessus	Scientific Linux Local Security Checks	2014/7/23	2021/1/14	critical
79110	RHEL 6 : nss (RHSA-2014:0915)	Nessus	Red Hat Local Security Checks	2014/11/11	2025/4/15	high
82234	Debian DLA-89-1 : nss security update	Nessus	Debian Local Security Checks	2015/3/26	2021/1/11	critical
76686	CentOS 6 : nspr / nss / nss-util (CESA-2014:0917)	Nessus	CentOS Local Security Checks	2014/7/23	2021/1/4	critical

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