SB2018122608 - Multiple vulnerabilities in Qt 

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Main Vulnerability Database SB2018122608

SB2018122608 - Multiple vulnerabilities in Qt

Published: December 26, 2018 Updated: May 4, 2020

Security Bulletin ID SB2018122608
Severity
Medium
Patch available
YES
Number of vulnerabilities 7
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 43% Low 57%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 7 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2018-19871)

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

The vulnerability exists due to application does not properly control consumption of internal resources within QTgaFile in Qt. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


2) Buffer overflow (CVE-ID: CVE-2018-19869)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing SVG images within the qsvghandler.cpp file in Qt. A remote attacker can create a specially crafted image, pass it to he application that uses Qt library for SVG processing, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


3) Information disclosure (CVE-ID: CVE-2018-19865)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to present keystroke logging functionality in Virtual Keyboard. A local user can record keystrokes and gain access to sensitive information.


4) Division by zero (CVE-ID: CVE-2018-19872)

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

The vulnerability exists due to division by zero error when processing PPM images. A remote attacker can trick the victim to open a specially crafted image and crash the affected application.

5) 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.

6) 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.

7) 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.

Remediation

Install update from vendor's website.

References