SB2020020521 - Denial of service in LibVNCServer
Published: February 5, 2020 Updated: June 30, 2020
Security Bulletin ID
SB2020020521
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2010-5304)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the way LibVNCServer handles certain ClientCutText messages. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client.
Remediation
Install update from vendor's website.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139654.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139814.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140219.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html
- http://seclists.org/oss-sec/2014/q3/639
- http://www.openwall.com/lists/oss-security/2014/09/23/6