High severity · published Jun 9, 2020
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 service to QSslSocket…
7.5
CVSS
3.1%
EPSS
No
On KEV
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.)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
31; 32; 33 · source: NVD
LE
Leap · Opensuse
15.2 · source: NVD
MU
Mumble · Mumble
1.3.0 · source: NVD
QT
QT · QT
5.12.2 before 5.12.9; 5.13.0 through 5.13.2; 5.14.0 through 5.14.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13962
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-13962
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00004.html
Issue Tracking
https://bugreports.qt.io/browse/QTBUG-83450
Exploit
https://github.com/mumble-voip/mumble/issues/3679
Patch
https://github.com/mumble-voip/mumble/pull/4032
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X6EDPIIAQPVP2CHL2CHDHJ25EECA7UE/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQJDBZUYMMF4R5QQKD2HTIKQU2NSKO63/
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