Auth bypass in Openvpn
CVE-2020-15078
OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.
EPSS: 0.051 (91.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Openvpn
- Canonical Ubuntu_linux — versions 18.04, 20.04, 20.10
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 32, 33, 34
- N/a Openvpn — versions 2.5.1 and earlier versions
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@openvpn.net (x_refsource_FEDORA, vendor-advisory)
- security@openvpn.net (x_refsource_FEDORA, vendor-advisory)
- security@openvpn.net (Patch, x_refsource_MISC, Vendor Advisory)
- security@openvpn.net (x_refsource_MISC, Broken Link)
- security@openvpn.net (x_refsource_FEDORA, vendor-advisory)
- security@openvpn.net (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@openvpn.net (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@openvpn.net (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15078?
- CVE-2020-15078 is a high-severity vulnerability in Openvpn, classified under Authentication Bypass by Primary Weakness. CVSS score: 7.5/10. Published 2021-04-26.
- How severe is CVE-2020-15078?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-15078 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.