A vulnerability in the 2D subcomponent of Java Runtime Environment (JRE) could allow an unauthenticated, remote attacker to execute arbitrary code on a system.
The vulnerability is due to improper handling of certain web pages or files by the affected software. An attacker could exploit this vulnerability by convincing a user to open a malicious font file or visit a malicious web page. If successful, it could allow the attacker to execute arbitrary code on the targeted system.
Oracle has confirmed the vulnerability and released software updates.
Indicators of Compromise
The following Oracle products are vulnerable:
JRE 7 Update 17 and prior
JRE 6 Update 43 and prior
JRE 5.0 Update 41 and prior
JavaFX versions 2.2.7 and prior
The vulnerability is due to improper handling of certain Compact Font Format (CFF) based OpenType fonts by the affected software. When processed, the two unspecified operators may perform insufficient bounds checks on user-supplied elements.
An unauthenticated, remote attacker could exploit this vulnerability by persuading a user to visit a malicious website. Processing the data could allow the attacker to read and write elements beyond the allocated buffers, leading to a memory corruption. The attacker could use this condition to execute arbitrary code on a targeted system under the context of the current process.
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.
Exploitation of this vulnerability was demonstrated during the Pwn2Own competition at CanSecWest 2013; however, the exploit is not publicly available.
Administrators are advised to apply the appropriate updates.
Users should verify that unsolicited links are safe to follow.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Administrators are advised to monitor affected systems.
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.
Red Hat Enterprise Linux Workstation Supplementary
6 (IA-32, x86_64)
5 (IA-32, PPC64, S390, S390x, x86_64)
RHEL Supplementary EUS
5.9.z (IA-32, x86_64, ppc, ppc64, s390, s390x)
RHEL Supplementary Long Life
5.9 (IA-32, x86_64)
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.