Oracle Linux 8 : qt5-qtbase / and / qt5-qtwebsockets (ELSA-2020-4690)

Medium Nessus Plugin ID 142803

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VPR Score: 6.7


The remote Oracle Linux host is missing one or more security updates.


The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4690 advisory.

- Qt through 5.14 allows an exponential XML entity expansion attack via a crafted SVG document that is mishandled in QXmlStreamReader, a related issue to CVE-2003-1564. (CVE-2015-9541)

- In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages.
Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption). (CVE-2018-21035)

- 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.) (CVE-2020-13962)

- qt: files placed by attacker can influence the working directory and lead to malicious code execution (CVE-2020-0569)

- Uncontrolled search path in the QT Library before 5.14.0, 5.12.7 and 5.9.10 may allow an authenticated user to potentially enable elevation of privilege via local access. (CVE-2020-0570)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 142803

File Name: oraclelinux_ELSA-2020-4690.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2020/11/12

Updated: 2020/11/13

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 6.7

CVSS Score Source: CVE-2020-0570

CVSS v2.0

Base Score: 4.4

Temporal Score: 3.3

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.3

Temporal Score: 6.4

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:qt5-assistant, p-cpe:/a:oracle:linux:qt5-designer, p-cpe:/a:oracle:linux:qt5-doctools, p-cpe:/a:oracle:linux:qt5-linguist, p-cpe:/a:oracle:linux:qt5-qdbusviewer, p-cpe:/a:oracle:linux:qt5-qtbase, p-cpe:/a:oracle:linux:qt5-qtbase-common, p-cpe:/a:oracle:linux:qt5-qtbase-devel, p-cpe:/a:oracle:linux:qt5-qtbase-examples, p-cpe:/a:oracle:linux:qt5-qtbase-gui, p-cpe:/a:oracle:linux:qt5-qtbase-mysql, p-cpe:/a:oracle:linux:qt5-qtbase-odbc, p-cpe:/a:oracle:linux:qt5-qtbase-postgresql, p-cpe:/a:oracle:linux:qt5-qtbase-private-devel, p-cpe:/a:oracle:linux:qt5-qtbase-static, p-cpe:/a:oracle:linux:qt5-qttools, p-cpe:/a:oracle:linux:qt5-qttools-common, p-cpe:/a:oracle:linux:qt5-qttools-devel, p-cpe:/a:oracle:linux:qt5-qttools-examples, p-cpe:/a:oracle:linux:qt5-qttools-libs-designer, p-cpe:/a:oracle:linux:qt5-qttools-libs-designercomponents, p-cpe:/a:oracle:linux:qt5-qttools-libs-help, p-cpe:/a:oracle:linux:qt5-qttools-static, p-cpe:/a:oracle:linux:qt5-qtwebsockets, p-cpe:/a:oracle:linux:qt5-qtwebsockets-devel, p-cpe:/a:oracle:linux:qt5-qtwebsockets-examples

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/11/10

Vulnerability Publication Date: 2020/01/24

Reference Information

CVE: CVE-2015-9541, CVE-2018-21035, CVE-2020-0569, CVE-2020-0570, CVE-2020-13962