CVE-2018-21232 Denial of service in n/a
An attacker can cause a denial of service via stack consumption in the re2c lexer generator due to uncontrolled recursion.
- 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
- Available
What is CVE-2018-21232?
CVE-2018-21232 is a medium-severity denial of service vulnerability in n/a, published on 29 Apr 2020. 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
re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.
Weakness: CWE-674
Which versions are affected by CVE-2018-21232?
It affects 1 product.
Linux distribution packages (6)
re2c SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 1.0.3-150000.3.3.1 |
re2c SUSE:Linux Enterprise Module for Basesystem 15 SP5 | All versions | 1.0.3-150000.3.3.1 |
re2c SUSE:Manager Proxy 4.2 | All versions | 1.0.3-150000.3.3.1 |
re2c SUSE:Manager Server 4.2 | All versions | 1.0.3-150000.3.3.1 |
re2c openSUSE:Leap 15.4 | All versions | 1.0.3-150000.3.3.1 |
re2c openSUSE:Leap 15.5 | All versions | 1.0.3-150000.3.3.1 |
Products include Re2c Re2c.
How do I fix CVE-2018-21232?
Upgrade to a fixed version.
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-2018-21232 being exploited?
There is no known exploitation of CVE-2018-21232 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as AZL-7337, DEBIAN-CVE-2018-21232, ECHO-4fc2-67bd-0a7a, GHSA-pgr8-gpgg-9j5m, MGASA-2021-0299, SUSE-SU-2023:3353-1 and 1 more.