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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.049 (91.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000
Affected products
- Openvpn
- Canonical Ubuntu Linux — versions 18.04, 20.04, 20.10
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 32, 33, 34
- Openvpn — versions 2.5.1 and earlier versions
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- community.openvpn.net/openvpn/wiki/CVE-2020-15078 (Patch, Vendor Advisory)
- community.openvpn.net/openvpn/wiki/SecurityAnnouncements (Broken Link)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202105-25 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/usn/usn-4933-1 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/05/msg00002.html (mailing-list, 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.