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CVE-2019-14899

HIGH
7.4
CVSS Score
Published: December 11, 2019 at 02:45 PM UTC
Updated: June 17, 2026 at 02:19 AM UTC
7 products affected across 4 vendorsLinux KernelmacOSiPhone OS

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Severity
HIGH7.4
Exploit prediction
EPSS 0.8%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
95%
v < 13.6
Affected range stops below 13.6, so it looks safe — our inference, not a vendor statement
iPhone OS· Apple
95%
v < 13.6
Affected range stops below 13.6, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 10.15.611.0
Affected range stops below 10.15.6, so it looks safe — our inference, not a vendor statement
tvOS· Apple
95%
v < 13.4.8
Affected range stops below 13.4.8, so it looks safe — our inference, not a vendor statement
FreeBSD· Freebsd
95%
All versions
Linux Kernel· Linux
95%
All versions
OpenBSD· Openbsd
95%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (15)

Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/Dec/32
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/Jul/23
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/Jul/24
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/Jul/25
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/Nov/20
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/08/13/2
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/10/07/3
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/07/05/1

CVSS

7.4HIGH[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-300NVD-CWE-Other

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