#VU5209 Security bypass in Microsoft Office - CVE-2014-1809
Published: January 20, 2017 / Updated: February 28, 2017
Vulnerability identifier: #VU5209
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2014-1809
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Microsoft Office
Microsoft Office
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to improper implementation of Address Space Layout Randomization (ASLR) features in MSCOMCTL. By persuading a victim to visit a specially-crafted Web site or open an application or Office document with a specially-crafted ActiveX control embedded within it, an attacker could exploit this vulnerability to bypass ASLR and execute another attack that otherwise would have been blocked by ASLR.
Successful exploitation of the vulnerability results in security bypass on the vulnerable system.
Note: the vulnerability was being actively exploited.
The weakness exists due to improper implementation of Address Space Layout Randomization (ASLR) features in MSCOMCTL. By persuading a victim to visit a specially-crafted Web site or open an application or Office document with a specially-crafted ActiveX control embedded within it, an attacker could exploit this vulnerability to bypass ASLR and execute another attack that otherwise would have been blocked by ASLR.
Successful exploitation of the vulnerability results in security bypass on the vulnerable system.
Note: the vulnerability was being actively exploited.
Remediation
Install update from vendor's website.