CVE-2014-6040 Denial of service in n/a
Attackers can cause a denial of service in applications using glibc by sending specific multibyte characters to the iconv function during character encoding conversion.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-6040?
CVE-2014-6040 is a medium-severity denial of service vulnerability in Gnu Glibc, published on 5 Dec 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via a multibyte character value of "0xffff" to the iconv function when converting (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, or (5) IBM1364 encoded data to UTF-8.
Weakness: CWE-119
Which versions are affected by CVE-2014-6040?
It affects 1 product.
Products include Gnu Glibc.
How do I fix CVE-2014-6040?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2014-6040 being exploited?
There is no known exploitation of CVE-2014-6040 in the wild and no public exploit code.
Other vulnerabilities in Gnu Glibc
Sources
Also known as DEBIAN-CVE-2014-6040, GHSA-q282-r79m-mmjq, UBUNTU-CVE-2014-6040.