Mozilla Firefox CSS font-face Remote Code Execution VulnerabilityZDI-10-133: July 20th, 2010
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This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within handling of references to external font resources. A value is used as a 16 bit integer in an array allocation and later as 32 bit when iterating over and then populating these fields. By creating enough references, a remote attacker can exploit this vulnerability to execute arbitrary code under the context of the browser.
Vendor ResponseMozilla Firefox has issued an update to correct this vulnerability. More details can be found at:
2010-06-23 - Vulnerability reported to vendor
2010-07-20 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: