Ubuntu update for qtbase-opensource-src

Published: 2021-09-16

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-17507 CVE-2021-38593
CWE-ID	CWE-125 CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system libqt5gui5 (Ubuntu package) Operating systems & Components / Operating system package or component libqt5core5a (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU46199

Risk: Medium

CVSSv3.1: 4.6 [AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-17507

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to buffer over-read. A remote attacker can perform a denial of service attack.

Mitigation

Update the affected package qtbase-opensource-src to the latest version.

Vulnerable software versions

Ubuntu: 18.04

libqt5gui5 (Ubuntu package): before 5.9.5+dfsg-0ubuntu2.6

libqt5core5a (Ubuntu package): before 5.9.5+dfsg-0ubuntu2.6

External links

http://ubuntu.com/security/notices/USN-5081-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU66867

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38593

CWE-ID: CWE-787 - Out-of-bounds write