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    CVE-2018-20436

    The "secret chat" feature in Telegram 4.9.1 for Android has a "side channel" in which Telegram servers send GET requests for URLs typed while composing a chat message, before that chat message is sent. There are also GET requests to other URLs on the same web server. This also affects one or more other Telegram products, such as Telegram Web-version 0.7.0. In addition, it can be interpreted as an SSRF issue. NOTE: a third party has reported that potentially unwanted behavior is caused by misconfiguration of the "Secret chats > Preview links" setting

    Published:Dec 24, 2018
    Last Modified:Nov 21, 2024
    EPS:Dec 24, 2018
    EPSS Score:0.00482
    CVSS Score:8.1

    Affected Products

    Vendor
    Telegram
    Product
    Telegram
    Vendor
    Telegram
    Product
    Web

    Exploits

    https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.htmlhttps://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.htmlhttps://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.htmlhttps://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

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    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