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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.)
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.60% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- nxlog/nxlog
- Source
- cve@mitre.org
References
- https://github.com/GuillaumePetit84/CVE-2020-35488Exploit, Mitigation, Third Party Advisory
- https://gitlab.com/nxlog-public/nxlog-ce/-/blob/master/ChangeLog.txt#L2Release Notes, Third Party Advisory
- https://github.com/GuillaumePetit84/CVE-2020-35488Exploit, Mitigation, Third Party Advisory
- https://gitlab.com/nxlog-public/nxlog-ce/-/blob/master/ChangeLog.txt#L2Release Notes, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.