CVE-2019-6488 Denial of service in n/a
A flaw in glibc on x32 architecture causes segmentation faults during memory operations, leading to application crashes and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-6488?
CVE-2019-6488 is a high-severity denial of service vulnerability in Gnu Glibc, published on 18 Jan 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.
Weakness: CWE-404
Which versions are affected by CVE-2019-6488?
It affects 1 product.
Products include Gnu Glibc.
How do I fix CVE-2019-6488?
Apply the vendor's patch.
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-2019-6488 being exploited?
There is no known exploitation of CVE-2019-6488 in the wild and no public exploit code.
Other vulnerabilities in Gnu Glibc
Sources
Also known as DEBIAN-CVE-2019-6488, GHSA-7x9c-h7v7-85mv, UBUNTU-CVE-2019-6488.