SB2019060308 - Ubuntu update for Qt
Published: June 3, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) XXE attack (CVE-ID: CVE-2018-15518)
The vulnerability allows a remote attacker to conduct XXE-attack.
The vulnerability exists due to improper handling of XML External Entities (XXEs) when parsing an XML file. A remote attacker can trick the victim into opening an XML file that submits malicious input, trigger a double-free error in QXmlStream and cause the service to crash.
2) NULL pointer dereference (CVE-ID: CVE-2018-19870)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in QGifHandler. A remote attacker can trick the victim into opening a specially crafted GIF image, trigger a segmentation fault and cause the service to crash.
3) Buffer overflow (CVE-ID: CVE-2018-19873)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to buffer overflow in QBmpHandler. A remote attacker can trick the victim into opening specially crafted BMP data, trigger memory corruption and cause the service to crash.
Remediation
Install update from vendor's website.