MEDIUM CVSS 4.3
Published: 2021-01-06

CVE-2020-8275

citrix secure_mail Security Advisory (CVE-2020-8275)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2020-8275 impacting citrix secure_mail. Evaluated with CVSS Base Score of 4.3 (MEDIUM).

Original NVD Description

Source: NIST NVD
Citrix Secure Mail for Android before 20.11.0 suffers from improper access control allowing unauthenticated access to read limited calendar related data stored within Secure Mail. Note that a malicious app would need to be installed on the Android device or a threat actor would need to execute arbitrary code on the Android device.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
Required (UI:R)
User must click or open resource
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
Low (C:L)
Partial information leakage
Integrity
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product citrix / secure_mail
Affected Versions *
Weakness Enumeration CWE-284

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2020-8275 impacting citrix secure_mail.

⚡ Nuclei Detection Template (YAML) cve-2020-8275.yaml
id: cve-2020-8275

info:
  name: citrix secure_mail - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2020-8275 affecting citrix secure_mail.
    Evaluation: Citrix Secure Mail for Android before 20.11.0 suffers from improper access control allowing unauthenticated access to read limited calendar related da...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2020-8275
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
    cvss-score: 4.3
    cve-id: CVE-2020-8275
    cwe-id: CWE-284
  tags: cve,cve-2020-8275,citrix,secure_mail,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "secure_mail"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2020-8275.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2020-8275
# Target: citrix secure_mail | CVSS: 4.3 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2020-8275 (citrix secure_mail)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against citrix secure_mail scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2020-8275.sh
# Recommended Remediation & Patching Commands for CVE-2020-8275
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install secure_mail 2>/dev/null || \
sudo dnf upgrade secure_mail 2>/dev/null || \
sudo yum update secure_mail

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i secure_mail 2>/dev/null || rpm -qa | grep -i secure_mail

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2020-8275 in citrix secure_mail?

Review vendor-specific security notices and update citrix secure_mail packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2020-8275?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2020-8275?

CVE-2020-8275 is classified with a CVSS 3.1 Base Score of 4.3 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.3
MEDIUM SEVERITY
CVE ID CVE-2020-8275
Weakness CWE-284
Vendor citrix
Product secure_mail
Published 2021-01-06
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N