CVE-2002-1336 TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.
HighCVSS 7.5
EPSS 2.4%
- Published
- Updated
- Exploit status
- No public exploit known
Description
TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tightvnc | = 1.2.0 | No fix listed |
| tightvnc | = 1.2.1 | No fix listed |
| tightvnc | = 1.2.3 | No fix listed |
| tightvnc | = 1.2.4 | No fix listed |
| tightvnc | = 1.2.5 | No fix listed |
| debian/tightvnc(Debian:12) | < 1.2.6-1 | 1.2.6-1 |
| debian/tightvnc(Debian:13) | < 1.2.6-1 | 1.2.6-1 |
| debian/tightvnc(Debian:14) | < 1.2.6-1 | 1.2.6-1 |
References
- CLA-2003:640 vendor-advisory
- 20020724 VNC authentication weakness mailing-list
- 20020726 RE: VNC authentication weakness mailing-list
- MDKSA-2003:022 vendor-advisory
- RHSA-2002:287 vendor-advisory
- RHSA-2003:041 vendor-advisory
- 5296 vdb-entry
- www.tightvnc.com
- vnc-weak-authentication(5992) vdb-entry
- Debian Security Tracker CVE-2002-1336 vendor-advisory