Privilege escalation in Gns3
CVE-2020-14976
GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.gns3.com/ (Vendor Advisory)
- github.com/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db (Patch, Third Party Advisory)
- github.com/GNS3/gns3-server/releases/tag/v2.1.17 (Third Party Advisory, Release Notes)
- theevilbit.github.io/posts/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14976?
- CVE-2020-14976 is a medium-severity vulnerability in Gns3, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2020-06-23.
- How severe is CVE-2020-14976?
- Medium severity. CVSS v3 base score is 5.5 out of 10.