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,…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.84% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-300
- Affected
- freebsd/freebsd · linux/linux kernel · openbsd/openbsd · apple/ipados · apple/iphone os · apple/mac os x · apple/macos · apple/tvos
- Source
- secalert@redhat.com
References
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Jul/23Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Jul/24Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Jul/25Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/08/13/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/10/07/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/07/05/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14899Issue Tracking, Third Party Advisory
- https://openvpn.net/security-advisory/no-flaws-found-in-openvpn-software/Third Party Advisory
- https://support.apple.com/kb/HT211288Third Party Advisory
- https://support.apple.com/kb/HT211289Third Party Advisory
- https://support.apple.com/kb/HT211290Third Party Advisory
- https://support.apple.com/kb/HT211850Third Party Advisory
- https://support.apple.com/kb/HT211931Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Jul/23Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Jul/24Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Jul/25Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/08/13/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/10/07/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/07/05/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14899Issue Tracking, Third Party Advisory
- https://openvpn.net/security-advisory/no-flaws-found-in-openvpn-software/Third Party Advisory
- https://support.apple.com/kb/HT211288Third Party Advisory
- https://support.apple.com/kb/HT211289Third Party Advisory
- https://support.apple.com/kb/HT211290Third Party Advisory
- https://support.apple.com/kb/HT211850Third Party Advisory
- https://support.apple.com/kb/HT211931Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.