CVE-2020-26117

Impact

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.

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00024.html
• https://bugzilla.opensuse.org/show_bug.cgi?id=1176733
• https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb
• https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b
• https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba
• https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e
• https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0
• https://lists.debian.org/debian-lts-announce/2020/10/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00024.html
• https://bugzilla.opensuse.org/show_bug.cgi?id=1176733
• https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb
• https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b
• https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba
• https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e
• https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0
• https://lists.debian.org/debian-lts-announce/2020/10/msg00007.html