CVE-2019-9192 Denial of service in n/a
A crafted regular expression in glibc can cause uncontrolled recursion, leading to a denial of service in applications using the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-9192?
CVE-2019-9192 is a high-severity denial of service vulnerability in Gnu Glibc, published on 26 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\\1\\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern
Weakness: CWE-674
Which versions are affected by CVE-2019-9192?
It affects 1 product.
Products include Gnu Glibc.
How do I fix CVE-2019-9192?
No fix published yet.
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-2019-9192 being exploited?
There is no known exploitation of CVE-2019-9192 in the wild and no public exploit code.
Other vulnerabilities in Gnu Glibc
Sources
Also known as DEBIAN-CVE-2019-9192, GHSA-v5rq-2q5p-p82v, ROOT-OS-DEBIAN-12-CVE-2019-9192, ROOT-OS-DEBIAN-13-CVE-2019-9192.