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high7.5

CVE-2020-13962

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 servic…

Impact

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.)

Affected products

VendorProductAffected versions
MumbleMumble
Version 1.3.0
QtQt
from 5.12.2 before 5.12.9
from 5.13.0 through 5.13.2
from 5.14.0 through 5.14.2
FedoraprojectFedora
Versions 31, 32, 33
OpensuseLeap
Version 15.2

References