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    CVE-2019-14899

    A vulnerability was discovered in Linux, FreeBSD, OpenBSD, MacOS, iOS, and Android that allows a malicious access point, or an adjacent user, to determine if a connected user is using a VPN, make positive inferences about the websites they are visiting, and determine the correct sequence and acknowledgement numbers in use, allowing the bad actor to inject data into the TCP stream. This provides everything that is needed for an attacker to hijack active connections inside the VPN tunnel.

    Published:Dec 4, 2019
    Last Modified:Nov 21, 2024
    EPS:Dec 11, 2019
    EPSS Score:0.00053
    CVSS Score:7.4

    Affected Products

    Vendor
    Apple
    Product
    Ipados
    Vendor
    Apple
    Product
    Iphone Os
    Vendor
    Apple
    Product
    Mac Os X
    Vendor
    Apple
    Product
    Macos
    Vendor
    Apple
    Product
    Tvos
    Vendor
    Freebsd
    Product
    Freebsd
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Openbsd
    Product
    Openbsd

    Exploits

    No exploit reference

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    CVE-2026-64760 (CVSS 5.5) — An information leakage was addressed with additional validation. This issue is fixed in iOS 18.7.10 and iPadOS…
    CVE-2026-43794 (CVSS 8.8) — A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, i…
    CVE-2026-65346 (CVSS 8.8) — An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6.1 and iPadOS…
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    References

    http://seclists.org/fulldisclosure/2020/Dec/32
    http://seclists.org/fulldisclosure/2020/Jul/23
    http://seclists.org/fulldisclosure/2020/Jul/24
    http://seclists.org/fulldisclosure/2020/Jul/25
    http://seclists.org/fulldisclosure/2020/Nov/20
    http://www.openwall.com/lists/oss-security/2020/08/13/2
    http://www.openwall.com/lists/oss-security/2020/10/07/3
    http://www.openwall.com/lists/oss-security/2021/07/05/1
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14899
    https://openvpn.net/security-advisory/no-flaws-found-in-openvpn-software/
    https://support.apple.com/kb/HT211288
    https://support.apple.com/kb/HT211289
    https://support.apple.com/kb/HT211290
    https://support.apple.com/kb/HT211850
    https://support.apple.com/kb/HT211931
    http://seclists.org/fulldisclosure/2020/Dec/32
    http://seclists.org/fulldisclosure/2020/Jul/23
    http://seclists.org/fulldisclosure/2020/Jul/24
    http://seclists.org/fulldisclosure/2020/Jul/25
    http://seclists.org/fulldisclosure/2020/Nov/20
    http://www.openwall.com/lists/oss-security/2020/08/13/2
    http://www.openwall.com/lists/oss-security/2020/10/07/3
    http://www.openwall.com/lists/oss-security/2021/07/05/1
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14899
    https://openvpn.net/security-advisory/no-flaws-found-in-openvpn-software/
    https://support.apple.com/kb/HT211288
    https://support.apple.com/kb/HT211289
    https://support.apple.com/kb/HT211290
    https://support.apple.com/kb/HT211850
    https://support.apple.com/kb/HT211931

    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