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Vulnerability Alert

Mozilla Firefox and Thunderbird onreadystatechange Event Code Execution Vulnerability

 
Threat Type:CWE-94: Code Injection
IntelliShield ID:29788
Version:3
First Published:2013 June 26 16:50 GMT
Last Published:2013 September 06 14:58 GMT
Port: Not available
CVE:CVE-2013-1690
BugTraq ID:60762
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.7
 
Version Summary:Functional code that demonstrates an exploit of the Mozilla Firefox and Thunderbird onreadystatechange event code execution vulnerability is publicly available.
 
 
Description
A vulnerability in Mozilla Firefox and Thunderbird could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.

The vulnerability is due to improper handling of certain web pages by the affected software. An attacker could exploit this vulnerability by convincing a user to visit a malicious web page containing crafted content. If successful, it could allow the attacker to execute arbitrary code on a targeted system or cause the affected software to terminate unexpectedly, resulting in a denial of service (DoS) condition.

Functional code that exploits this vulnerability is available as part of the Metasploit framework.

Mozilla has confirmed this vulnerability and released updated software.
 
Warning Indicators
The following Mozilla products are vulnerable:
  • Firefox versions prior to 22.0
  • Firefox ESR versions prior to 17.0.7
  • Thunderbird versions prior to 17.0.7
  • Thunderbird ESR versions prior to 17.0.7
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.

In products such as Thunderbird and SeaMonkey, where scripting is disabled by default, the vulnerability cannot be exploited through the email functionality. However, the browser-like context of these applications is vulnerable to an exploit.
 
Vendor Announcements
Mozilla has released a security advisory at the following link: MFSA 2013-53

FreeBSD has released a VuXML document at the following link: mozilla -- multiple vulnerabilities

Red Hat has released an official CVE statement and security advisories for bug 977602 at the following links: CVE-2013-1690, RHSA-2013:0981, and RHSA-2013:0982
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on the system with the privileges of the user running the software. The attacker could also exploit this vulnerability to cause the affected software to terminate unexpectedly, leading to a DoS condition.
 
Technical Information
The vulnerability is due to improper memory operations performed by the affected software while handling certain web pages.

An unauthenticated, remote attacker could exploit this vulnerability by persuading a user to visit a crafted web page with the onreadystatechange event. When the user reloads the page, the affected software could access unmapped memory regions, which may lead to abnormal termination. The attacker could leverage this condition to execute arbitrary code on a targeted system with the privileges of the user running the software.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users should verify that unsolicited links are safe to follow.

Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.

Administrators are advised to use an unprivileged account when browsing the Internet.
 
Patches/Software
Mozilla has released updated software at the following links:

Firefox 22.0
Firefox ESR 17.0.7
Thunderbird 17.0.7
Thunderbird ESR 17.0.7

CentOS packages can be updated using the up2date or yum command.

FreeBSD releases ports collection updates at the following link: Ports Collection Index

Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.

Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
2642/0Mozilla Firefox Arbitrary Code Execution VulnerabilityS7342013 Aug 13 
 
Alert History
 
Version 2, July 1, 2013, 3:25 PM: FreeBSD has released a VuXML document and updated ports collection to address the Mozilla Firefox and Thunderbird onreadystatechange event code execution vulnerability.

Version 1, June 26, 2013, 4:50 PM: Mozilla Firefox and Thunderbird contain a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Mozilla FoundationFirefox 17.0 Base, .1 | 18.0 Base, .2 | 19.0 Base, .1, .2 | 20.0 Base | 21.0 Base
Mozilla FoundationFirefox ESR 17.0 Base, .1, .2, .3, .4, .5, .6
Mozilla FoundationThunderbird 15.0 Base | 16.0 Base, .1 | 17.0 Base, .1, .2, .3, .4, .5, .6
Mozilla FoundationThunderbird ESR 17.0 Base, .1, .2, .3, .4, .5, .6

Associated Products:
CentOS ProjectCentOS 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64 | 6 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64
FreeBSD ProjectFreeBSD 6.3 Base | 6.4 Base | 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 7.4 Base | 8.0 Base | 8.1 Base | 8.2 Base | 8.3 Base | 9.0 Base | 9.1 Base
Red Hat, Inc.Red Hat Enterprise Linux 5 IA-32, IA-64, PPC, ppc64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server AUS 6.4 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 5 IA-32, x86_64 | 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop Workstation 5 IA-32, x86-64
Red Hat, Inc.Red Hat Enterprise Linux EUS (Extended Update Support) 5.9.z Base, IA-32, IA-64, PPC, PPC-64, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Long Life 5.9 IA-32, IA-64, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Optional Productivity Applications 5 IA-32, x86-64
Red Hat, Inc.Red Hat Enterprise Linux Optional Productivity Applications EUS 5.9.z IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC, PPC 64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server EUS 6.4z Base, IA-32, x86_64, PPC, PPC64, s390, s390x
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64




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