Vulnerability in Versa-Networks Versa Operating System
CVE-2018-16495
In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application. Failing to issue a new session ID following a successful login introduces the possibility for an attacker to set up a trap session on the device the victim is likely to login with.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Versa-Networks Versa Operating System
- Versa Vos — versions Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1
Weakness classification (CWE)
References
- hackerone.com/reports/1168192 (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-16495?
- CVE-2018-16495 is a high-severity vulnerability in Versa-Networks Versa Operating System, classified under Session Fixation. CVSS score: 8.8/10. Published 2021-05-26.
- How severe is CVE-2018-16495?
- High severity. CVSS v3 base score is 8.8 out of 10.