Vulnerability CVE-2020-13962


Published: 2020-06-09

Description:
Qt 5.12.2 through 5.14.2, as used in unofficial builds of Mumble 1.3.0 and other products, mishandles OpenSSL's error queue, which can cause a denial of service to QSslSocket users. Because errors leak in unrelated TLS sessions, an unrelated session may be disconnected when any handshake fails. (Mumble 1.3.1 is not affected, regardless of the Qt version.)

Type:

NVD-CWE-noinfo

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
QT -> QT 
Mumble -> Mumble 

 References:
https://bugreports.qt.io/browse/QTBUG-83450
https://github.com/mumble-voip/mumble/issues/3679
https://github.com/mumble-voip/mumble/pull/4032

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