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    CVE-2020-26174

    tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.

    Published:Dec 18, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 18, 2020
    EPSS Score:0.00423
    CVSS Score:8.8

    Affected Products

    Vendor
    Tangro
    Product
    Business Workflow

    Exploits

    https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

    Related CVEs

    CVE-2020-26171 (CVSS 4.3) — In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/u…
    CVE-2020-26172 (CVSS 4.2) — Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker t…
    CVE-2020-26173 (CVSS 3.1) — An incorrect access control implementation in Tangro Business Workflow before 1.18.1 allows an attacker to dow…
    CVE-2020-26175 (CVSS 6.5) — In tangro Business Workflow before 1.18.1, an attacker can manipulate the value of PERSON in requests to /api/…
    CVE-2020-26176 (CVSS 4.3) — An issue was discovered in tangro Business Workflow before 1.18.1. No (or broken) access control checks exist …
    CVE-2020-26177 (CVSS 4.3) — In tangro Business Workflow before 1.18.1, a user's profile contains some items that are greyed out and thus a…
    CVE-2020-26178 (CVSS 5.3) — In tangro Business Workflow before 1.18.1, knowing an attachment ID, it is possible to download workitem attac…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High