CVE-2020-27985
Security Onion v2 prior to 2.3.10 has an incorrect sudo configuration, which allows the administrative user to obtain root access without using the sudo password by editing and executing /home/<user>/SecurityOnion/setup/so-setup.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Security Onion v2 prior to 2.3.10 has an incorrect sudo configuration, which allows the administrative user to obtain root access without using the sudo password by editing and executing /home/<user>/SecurityOnion/setup/so-setup.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.53% probability · 45th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- securityonionsolutions/security onion
- Source
- cve@mitre.org
EPSS 0.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/Security-Onion-Solutions/securityonion/commit/b14670030349a2747a00ace665568ab5f51ac47bPatch, Third Party Advisory
- https://github.com/Security-Onion-Solutions/securityonion/releasesRelease Notes, Third Party Advisory
- https://s1gh.sh/cve-2020-27985-security-onion-local-privilege-escalation/Exploit, Patch, Third Party Advisory
- https://github.com/Security-Onion-Solutions/securityonion/commit/b14670030349a2747a00ace665568ab5f51ac47bPatch, Third Party Advisory
- https://github.com/Security-Onion-Solutions/securityonion/releasesRelease Notes, Third Party Advisory
- https://s1gh.sh/cve-2020-27985-security-onion-local-privilege-escalation/Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.