CVE-2017-7523 Memory corruption in cygwin
Buffer overflow in Cygwin allows attackers to crash processes or execute code with administrative privileges via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-7523?
CVE-2017-7523 is a high-severity memory corruption vulnerability in Red Hat, Inc. cygwin, published on 21 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cygwin versions 1.7.2 up to and including 1.8.0 are vulnerable to buffer overflow vulnerability in wcsxfrm/wcsxfrm_l functions resulting into denial-of-service by crashing the process or potential hijack of the process running with administrative privileges triggered by specially crafted input string.
Which versions are affected by CVE-2017-7523?
It affects 1 product.
Products include Cygwin Cygwin.
How do I fix CVE-2017-7523?
No fix has been published for CVE-2017-7523 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-2017-7523 being exploited?
There is no known exploitation of CVE-2017-7523 in the wild and no public exploit code.
Other vulnerabilities in Red Hat, Inc. cygwin
Sources
Also known as GHSA-vhqx-rr9r-7jww.