What is CVE-2020-35488?

CVE-2020-35488 is a high-severity vulnerability in Nxlog, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2021-01-05.

How severe is CVE-2020-35488?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2020-35488 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Nxlog

CVE-2020-35488

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.)

Vulnerability class: Insecure Deserialization

EPSS: 0.076 (93.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nxlog
N/a — versions n/a

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Mitigation)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2020-35488?: CVE-2020-35488 is a high-severity vulnerability in Nxlog, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2021-01-05.
How severe is CVE-2020-35488?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-35488 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.