Zero-day vulnerability in Microsoft Word

Advisory: SB2016101105 - Remote code execution in Microsoft Office

Vulnerable component: Microsoft Word

CVE-ID: CVE-2016-7193

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-119 - Memory corruption

Description:

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling of malicious RTF files by Microsoft Word. A remote attacker can create a specially crafted RTF document, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability will result in arbitrary code execution.

Note: the vulnerability was being actively exploited.

External links:

https://technet.microsoft.com/en-us/library/security/ms16-121.aspx
http://thehackernews.com/2016/10/Microsoft-security-patch-updates.html
https://threatpost.com/microsoft-patches-five-zero-days-under-attack/121211/
https://www.symantec.com/security_response/vulnerability.jsp?bid=93372
http://thehackernews.com/2016/10/Microsoft-security-patch-updates.html
http://www.securitynewspaper.com/2016/10/12/microsoft-patches-four-zero-days-used-live-attacks/
http://www.networkworld.com/article/3130109/security/microsoft-released-10-patches-6-rated-critical-...
https://www.scmagazine.com/patch-tuesday-microsoft-patches-five-zero-day-vulnerabilities/article/548...
http://www.zdnet.com/article/microsoft-hackers-have-exploited-zero-days-in-windows-10s-edge-office-i...
http://securityaffairs.co/wordpress/52186/hacking/microsoft-zero-da.html
https://www.helpnetsecurity.com/2016/10/12/october-patch-tuesday/
https://www.scmagazineuk.com/microsoft-bundles-security-updates--no-more-pick-and-choose/article/547...