VDB
CVE-2020-26117
CVE-2020-26117
PUBLISHED
CVSS 8.100000381469727 HIGH
In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.
EPSS 3.06% · 87.5th percentile
Risk Scores
CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS Score
3.06%
87.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:20.04:LTS | tigervnc | *, 1.10.1+dfsg-3, * |
| Ubuntu:18.04:LTS | tigervnc | 1.7.0+dfsg-8ubuntu2, *, 0 |
Timeline
- Sep 27, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 27, 2021 EPSS Score
- Dec 29, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 3, 2022 EPSS Score
- Jul 5, 2022 EPSS Score
- Sep 7, 2022 EPSS Score
- Jan 11, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-26117 advisory
- https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb fix
- https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b fix
- https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba fix
- https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e fix
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0 fix
- https://ubuntu.com/security/notices/USN-5965-1 advisory
- https://bugzilla.opensuse.org/show_bug.cgi?id=1176733 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-26117 third-party-advisory