CVE-2019-14899
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:M/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
17.0%
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 configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| freebsd | freebsd | - | cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:* |
| linux | linux_kernel | - | cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
| openbsd | openbsd | - | cpe:2.3:o:openbsd:openbsd:-:*:*:*:*:*:*:* |
| apple | ipados | * | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | * | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | mac_os_x | * | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| apple | macos | 11.0 | cpe:2.3:o:apple:macos:11.0:*:*:*:*:*:*:* |
| apple | tvos | * | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
References
seclists.org/fulldisclosure/2020/Dec/32
seclists.org/fulldisclosure/2020/Jul/23
seclists.org/fulldisclosure/2020/Jul/24
seclists.org/fulldisclosure/2020/Jul/25
seclists.org/fulldisclosure/2020/Nov/20
www.openwall.com/lists/oss-security/2020/08/13/2
www.openwall.com/lists/oss-security/2020/10/07/3
www.openwall.com/lists/oss-security/2021/07/05/1
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14899
openvpn.net/security-advisory/no-flaws-found-in-openvpn-software/
support.apple.com/kb/HT211288
support.apple.com/kb/HT211289
support.apple.com/kb/HT211290
support.apple.com/kb/HT211850
support.apple.com/kb/HT211931
Related
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:M/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
17.0%