#VU46199 Out-of-bounds read in qt5-qtbase - CVE-2020-17507

Vulnerability identifier: #VU46199

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-17507

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
qt5-qtbase
Other software / Other software solutions

Vendor: Qt Group

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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

qt5-qtbase: 5.15.0

---

External links
https://codereview.qt-project.org/c/qt/qtbase/+/308436
https://codereview.qt-project.org/c/qt/qtbase/+/308495
https://codereview.qt-project.org/c/qt/qtbase/+/308496
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/426FCC6JNK4JUEX5QHJQDYQ6MUVQ3E6P/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBPZVZNEYXGATTXM4WOE7OQ55VAKPVD6/

---

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.