CVE-2020-8434
CRITICALDescription
Jenzabar JICS (aka Internet Campus Solution) before 9.0.1 Patch 3, 9.1 before 9.1.2 Patch 2, and 9.2 before 9.2.2 Patch 8 has session cookies that are a deterministic function of the username. There is a hard-coded password to supply a PBKDF feeding into AES to encrypt a username and base64 encode it to a client-side cookie for persistent session authentication. By knowing the key and algorithm, an attacker can select any username, encrypt it, base64 encode it, and save it in their browser with the correct JICSLoginCookie cookie format to impersonate any real user in the JICS database without the need for authenticating (or verifying with MFA if implemented).
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 69% of all known CVEs.
References
Related Vulnerabilities
Other CWE-384 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-11714 | Critical | 9.8 | 32% | - | - |
| CVE-2019-12258 | High | 7.5 | 23% | - | Fix |
| CVE-2019-10008 | High | 8.8 | 22% | - | - |
| CVE-2018-17199 | High | 7.5 | 21% | - | Fix |
| CVE-2024-50339 | Medium | 5.3 | 20% | - | Fix |
| CVE-2018-18925 | Critical | 9.8 | 18% | - | - |
Common questions
How do I fix CVE-2020-8434?
No published fix for CVE-2020-8434 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2020-8434 being actively exploited?
Not that we know of. CVE-2020-8434 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 69% of all scored CVEs.
How severe is CVE-2020-8434?
CVE-2020-8434 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
Embed a live status badge for CVE-2020-8434
Markdown
[](https://tridentstack.com/cve/CVE-2020-8434)HTML
<a href="https://tridentstack.com/cve/CVE-2020-8434"><img src="https://tridentstack.com/cve/badge/CVE-2020-8434.svg" alt="CVE-2020-8434"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.