VDB
CVE-2020-26117
CVE-2020-26117
PUBLISHED
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 0.69% · 72.2th percentile
Risk Scores
EPSS Score
0.69%
72.2th 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 |
Exploit Intelligence
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0 (circl)
- https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e (circl)
- https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba (circl)
- https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb (circl)
- https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b (circl)
- https://bugzilla.opensuse.org/show_bug.cgi?id=1176733 (circl)
- [debian-lts-announce] 20201006 [SECURITY] [DLA 2396-1] tigervnc security update (circl)
- openSUSE-SU-2020:1666 (circl)
- openSUSE-SU-2020:1841 (circl)
Timeline
- Sep 27, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-26117 third-party-advisory
- https://bugzilla.opensuse.org/show_bug.cgi?id=1176733 third-party-advisory
- https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb third-party-advisory
- https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b third-party-advisory
- https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba third-party-advisory
- https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e third-party-advisory
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0 third-party-advisory
- https://ubuntu.com/security/notices/USN-5965-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-26117 third-party-advisory