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CVE

CVE-2019-14899

A vulnerability was discovered in Linux, FreeBSD, OpenBSD, MacOS, iOS, and Android that allows a malicious access point,

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.

HIGH · CVSS 7.4 EPSS 0.00052
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-300Channel Accessible by Non-Endpoint
▤

Affected Products & Versions

8
freebsdall versions
linux kernelall versions
openbsdall versions
apple ipados< 13.6
apple iphone os< 13.6
apple mac os x< 10.15.6
apple macosall versions
apple tvos< 13.4.8
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighRemote Access Tool - Renamed MeshAgent Execution - MacOS
producthighBinary Padding - MacOS
productmediumSuspicious Execution via macOS Script Editor
productmediumSystem Information Discovery Via Sysctl - MacOS
productmediumNew File Exclusion Added To Time Machine Via Tmutil - MacOS
▣

Scoring & Timeline

7.4
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Dec 2019 · 03:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
🔗

References & Sources

15
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2020/Dec/32Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jul/23Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jul/24Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jul/25Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Nov/20Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/08/13/2Mailing ListThird Party Advisory
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