CVE-2017-0087 Memory corruption in Windows Uniscribe

What is CVE-2017-0087?

CVE-2017-0087 is a high-severity memory corruption vulnerability in Microsoft Windows 7, published on 17 Mar 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Uniscribe in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted web site, aka "Uniscribe Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0072, CVE-2017-0083, CVE-2017-0084, CVE-2017-0086, CVE-2017-0088, CVE-2017-0089, and CVE-2017-0090.

Weakness: CWE-119

Which versions are affected by CVE-2017-0087?

It affects 3 products.

Products include Microsoft Windows 7, Microsoft Windows Server 2008, Microsoft Windows Vista.

How do I fix CVE-2017-0087?

No fix has been published for CVE-2017-0087 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-0087 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-0087 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Microsoft Windows 7

• CVE-2015-1635 Microsoft HTTP.sys Remote Code Execution Exploited Critical 9.8
• CVE-2015-2360 Microsoft Win32k Privilege Escalation Exploited High 8.8
• CVE-2014-6324 Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation Exploited High 8.8
• CVE-2014-6332 Microsoft Windows Object Linking & Embedding (OLE) Automation Array Remote Code Execution Exploited High 8.8
• CVE-2014-4148 Microsoft Windows Remote Code Execution Exploited High 8.8

All Microsoft Windows 7 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qf37-gphv-4f4r.