SB2012050804 - Two vulnerabilities in Microsoft Silverlight
Published: May 8, 2012 Updated: March 15, 2017
Security Bulletin ID
SB2012050804
CSH Severity
High
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Double free (CVE-ID: CVE-2012-0176)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to double-free error when rendering specially crafted XAML glyphs. A remote attacker can create a Web site containing a malicious XAML browser application, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
2) Improper Input Validation (CVE-ID: CVE-2012-0159)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to improper processing of a malicious TrueType font (.ttf) within t2embed.dll. A remote attacker can create a specially crafted TrueType font file, trick the victim into loading it and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Remediation
Install update from vendor's website.