SB2020060985 - Denial of service in Trolltech Qt
Published: June 9, 2020 Updated: March 6, 2026
Security Bulletin ID
SB2020060985
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2020-13962)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak when handling TLS connections. A remote attacker can force the application to leak random memory parts to unrelated TLS sessions and cause a denial of service to QSslSocket users.
Remediation
Install update from vendor's website.