CVE-2017-17426 Integer overflow in n/a
An integer overflow in glibc's malloc can lead to heap overflows, potentially allowing arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-17426?
CVE-2017-17426 is a high-severity vulnerability in Gnu Glibc, published on 5 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.
Weakness: CWE-190
Which versions are affected by CVE-2017-17426?
It affects 1 product.
Products include Gnu Glibc.
How do I fix CVE-2017-17426?
Apply the vendor's patch.
Is CVE-2017-17426 being exploited?
There is no known exploitation of CVE-2017-17426 in the wild and no public exploit code.
Other vulnerabilities in Gnu Glibc
Sources
Also known as GHSA-5rxv-m65f-6q4g.