CVE-2021-3530 Denial of service in binutils
A crafted symbol in GNU libiberty causes stack exhaustion and crashes, leading to denial of service for 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-2021-3530?
CVE-2021-3530 is a high-severity denial of service vulnerability in Gnu Binutils, published on 2 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was discovered in GNU libiberty within demangle_path() in rust-demangle.c, as distributed in GNU Binutils version 2.36. A crafted symbol can cause stack memory to be exhausted leading to a crash.
Weakness: CWE-674
Which versions are affected by CVE-2021-3530?
It affects 2 products.
Products include Gnu Binutils, Netapp Ontap Select Deploy Administration Utility.
How do I fix CVE-2021-3530?
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-2021-3530 being exploited?
There is no known exploitation of CVE-2021-3530 in the wild and no public exploit code.
Other vulnerabilities in Gnu Binutils
Sources
Also known as CVE-2021-3648, DEBIAN-CVE-2021-3530, GHSA-54mp-4694-9j92, UBUNTU-CVE-2021-3530.