CVE-2011-1999 Use after free in n/a
Remote attackers can execute arbitrary code in Internet Explorer 8 via a use-after-free vulnerability in select element handling.
- 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-2011-1999?
CVE-2011-1999 is a critical use after free vulnerability in Microsoft Internet Explorer, published on 12 Oct 2011. 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
Microsoft Internet Explorer 8 does not properly allocate and access memory, which allows remote attackers to execute arbitrary code via vectors involving a "dereferenced memory address," aka "Select Element Remote Code Execution Vulnerability."
Which versions are affected by CVE-2011-1999?
It affects 1 product.
Products include Microsoft Internet Explorer.
How do I fix CVE-2011-1999?
No fix has been published for CVE-2011-1999 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2011-1999 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-1999 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Microsoft Internet Explorer
- CVE-2014-1776 Microsoft Internet Explorer Memory Corruption
- CVE-2021-27085 Microsoft Internet Explorer Remote Code Execution
- CVE-2017-0222 Microsoft Internet Explorer Remote Code Execution
- CVE-2017-0210 Microsoft Internet Explorer Privilege Escalation
- CVE-2017-0149 Microsoft Internet Explorer Memory Corruption
Sources
Also known as GHSA-fcq9-gv39-5hfr.