CVE-2018-20457 Denial of service in n/a
Crafted ARM assembly input causes an out-of-bounds read and application crash in radare2, leading to denial of service.
- 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-2018-20457?
CVE-2018-20457 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 through 3.1.3, the assemble function inside libr/asm/p/asm_arm_cs.c allows attackers to cause a denial-of-service (application crash via an r_num_calc out-of-bounds read) by crafting an arm assembly input because a loop uses an incorrect index in armass.c and certain length validation is missing in armass64.c, a related issue to CVE-2018-20459.
Weakness: CWE-125
Which versions are affected by CVE-2018-20457?
It affects 1 product.
Products include Radare Radare2.
How do I fix CVE-2018-20457?
No fix has been published for CVE-2018-20457 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-2018-20457 being exploited?
There is no known exploitation of CVE-2018-20457 in the wild and no public exploit code.
Other vulnerabilities in Radare Radare2
Sources
Also known as GHSA-phjv-rf2x-c3qw, UBUNTU-CVE-2018-20457.