Unitronics UniDownloader IPWorksSSL.HTTPS.1 ActiveX Control SSLCertHandle Property Remote Code Execution VulnerabilityZDI-15-575: December 2nd, 2015
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Unitronics UniDownloader. 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 processing of the SSLCertHandle property of the IPWorksSSL.HTTPS ActiveX control. A crafted value can cause system software to treat arbitrary memory as a certificate structure which is then modified. An attacker can leverage this to attain remote code execution under the context of the user.
Vendor ResponseUnitronics has issued an update to correct this vulnerability. More details can be found at:
2015-05-20 - Vulnerability reported to vendor
2015-12-02 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Andrea Micalizzi (rgod)