CVE-2020-26164

In kdeconnect-kde (aka KDE Connect) before 20.08.2, an attacker on the local network could send crafted packets that trigger use of large amounts of CPU, memory, or network connection slots, aka a Denial of Service attack.

Weakness

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

Affected Software

Name	Vendor	Start Version	End Version
Kdeconnect	Kde	*	20.08.2 (excluding)
Kdeconnect	Ubuntu	bionic	*
Kdeconnect	Ubuntu	devel	*
Kdeconnect	Ubuntu	esm-apps/bionic	*
Kdeconnect	Ubuntu	esm-apps/focal	*
Kdeconnect	Ubuntu	esm-apps/jammy	*
Kdeconnect	Ubuntu	esm-apps/noble	*
Kdeconnect	Ubuntu	esm-apps/xenial	*
Kdeconnect	Ubuntu	focal	*
Kdeconnect	Ubuntu	groovy	*
Kdeconnect	Ubuntu	hirsute	*
Kdeconnect	Ubuntu	impish	*
Kdeconnect	Ubuntu	jammy	*
Kdeconnect	Ubuntu	kinetic	*
Kdeconnect	Ubuntu	lunar	*
Kdeconnect	Ubuntu	mantic	*
Kdeconnect	Ubuntu	noble	*
Kdeconnect	Ubuntu	oracular	*
Kdeconnect	Ubuntu	plucky	*
Kdeconnect	Ubuntu	questing	*
Kdeconnect	Ubuntu	trusty	*
Kdeconnect	Ubuntu	xenial	*

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.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2020-26164
CWE	https://cwe.mitre.org/data/definitions/400.html

Uncontrolled Resource Consumption

Weakness

Affected Software

Potential Mitigations

References

CVE-2020-26164

Uncontrolled Resource Consumption

Weakness

Affected Software

Potential Mitigations

Related Attack Patterns

References