CVE-2018-19871

An issue was discovered in Qt before 5.11.3. There is QTgaFile Uncontrolled Resource Consumption.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Potential Mitigations

• Mitigation of resource exhaustion attacks requires that the target system either:

• The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

• The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/147.html
• https://cwe.mitre.org/data/definitions/227.html
• https://cwe.mitre.org/data/definitions/492.html

References

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00002.html
• https://access.redhat.com/errata/RHSA-2019:2135
• https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/
• https://codereview.qt-project.org/#/c/237761/
• https://lists.debian.org/debian-lts-announce/2019/05/msg00014.html
• https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00002.html
• https://access.redhat.com/errata/RHSA-2019:2135
• https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/
• https://codereview.qt-project.org/#/c/237761/
• https://lists.debian.org/debian-lts-announce/2019/05/msg00014.html
• https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html