CVE-2020-35488 Denial of service in n/a
Remote attackers can crash the NXLog daemon via crafted Syslog payloads when specific directory naming configurations are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-35488?
CVE-2020-35488 is a high-severity denial of service vulnerability in n/a, published on 5 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The fileop module of the NXLog service in NXLog Community Edition 2.10.2150 allows remote attackers to cause a denial of service (daemon crash) via a crafted Syslog payload to the Syslog service. This attack requires a specific configuration. Also, the name of the directory created must use a Syslog field. (For example, on Linux it is not possible to create a .. directory. On Windows, it is not possible to create a CON directory.)
Weakness: CWE-502
Which versions are affected by CVE-2020-35488?
It affects 1 product.
Products include Nxlog Nxlog.
How do I fix CVE-2020-35488?
No fix has been published for CVE-2020-35488 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-2020-35488 being exploited?
There is no known exploitation of CVE-2020-35488 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry and 2 proofs of concept on GitHub.
Sources
Also known as GHSA-9rx5-vw74-rpgf.