CVE-2018-0840 Memory corruption in Microsoft Edge, ChakraCore, Internet Explorer
Remote attackers can execute arbitrary code via memory corruption in the scripting engine of Microsoft Edge and Internet Explorer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-0840?
CVE-2018-0840 is a high-severity memory corruption vulnerability in Microsoft Edge, published on 15 Feb 2018. 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
Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.
Weakness: CWE-787
Which versions are affected by CVE-2018-0840?
It affects 2 products.
Products include Microsoft Edge, Microsoft Internet Explorer.
How do I fix CVE-2018-0840?
No fix has been published for CVE-2018-0840 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-2018-0840 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-0840 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Microsoft Edge
Sources
Also known as GHSA-jfgp-9fwr-x969.