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CVE Record

CVE-2020-37104: ASTPP 4.0.1 VoIP Billing - Database Backup Download

ASTPP 4.0.1 contains an information disclosure vulnerability that allows unauthenticated attackers to download database backup files by predicting backup filename patterns. Attackers can generate a list of 6-digit PIN combinations and fuzz the backup download URL to exfiltrate sensitive database information from the /database_backup/ directory.

HighCVSS 8.7Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

ASTPP 4.0.1 can expose database backup files to anyone on the network or Internet if backup files are reachable under the web application. Those backups may contain sensitive customer, billing, account, or system data. This is a high-priority data exposure issue for organizations running ASTPP 4.0.1.

Executive priority

Prioritize within the next remediation cycle, sooner for Internet-facing ASTPP systems. The business risk is data exposure from billing and customer databases, not system takeover based on current sources.

Technical view

CVE-2020-37104 is an information disclosure flaw in ASTPP 4.0.1. Public advisories describe unauthenticated download of database backup files from a web-accessible backup directory using predictable filename patterns. The issue is mapped to CWE-538 and has CVSS v4.0 score 8.7.

Likely exposure

Exposure is limited to ASTPP 4.0.1 deployments where database backups are stored in a web-accessible location. Internet-facing VoIP billing portals have the highest risk. The provided sources do not identify other affected versions.

Exploitation context

A public Exploit-DB entry exists, so proof-of-concept details are publicly available. The source bundle does not show CISA KEV listing or confirmed active exploitation. Treat exposure as plausible because exploitation is remote, unauthenticated, and low complexity.

Researcher notes

Evidence comes from the CVE record, VulnCheck advisory, and Exploit-DB reference. No official patch version is named in the provided sources. Do not assume broader version impact without vendor confirmation.

Mitigation direction

  • Check ASTPP vendor and GitHub guidance for a fixed release or official remediation.
  • Upgrade or reconfigure only according to vendor-supported guidance.
  • Ensure database backups are not stored in web-accessible application directories.
  • Restrict public access to any backup storage paths.
  • Rotate credentials and secrets if database backup exposure is suspected.

Validation and detection

  • Inventory ASTPP deployments and confirm whether version 4.0.1 is present.
  • Verify whether database backups exist under web-accessible paths.
  • Confirm unauthenticated users cannot retrieve database backup files.
  • Review web access logs for suspicious backup file download attempts.
  • Assess exposed backups for sensitive data if access was possible.
Prepared
Confidence
high
Sources
6

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-538: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-37104 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.7 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.7CVSS 4.0HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NPrimary CVE score

Vulnerability scoring details

Base CVSS 4.0 score

8.7High
CVSS 4.0 vector shape for CVE-2020-37104Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ASTPPASTPP4.0.1Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-538 · source CWE mapping

Insertion of Sensitive Information into Externally-Accessible File or Directory

Insertion of Sensitive Information into Externally-Accessible File or Directory represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.