CVE-2018-20456 Denial of service in n/a
Attackers can cause a denial of service via application crash in radare2 by crafting a malicious input file that triggers a stack-based buffer over-read.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-20456?
CVE-2018-20456 is a medium-severity denial of service vulnerability in Radare Radare2, published on 25 Dec 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In radare2 prior to 3.1.1, the parseOperand function inside libr/asm/p/asm_x86_nz.c may allow attackers to cause a denial of service (application crash in libr/util/strbuf.c via a stack-based buffer over-read) by crafting an input file, a related issue to CVE-2018-20455.
Weakness: CWE-125
Which versions are affected by CVE-2018-20456?
It affects 1 product.
Products include Radare Radare2.
How do I fix CVE-2018-20456?
No fix has been published for CVE-2018-20456 yet. Limit exposure of the affected software until one is available.
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-2018-20456 being exploited?
There is no known exploitation of CVE-2018-20456 in the wild and no public exploit code.
Other vulnerabilities in Radare Radare2
Sources
Also known as GHSA-8x9g-h36m-4rg2, UBUNTU-CVE-2018-20456.