CVE-2024-1930

EUVD-2024-17652

08.05.2024, 02:15

No Limit on Number of Open Sessions / Bad Session Close Behaviour  in dnf5daemon-server before 5.1.17 allows a malicious user to impact Availability via No Limit on Number of Open Sessions.

There is no limit on how many sessions D-Bus clients may create using the `open_session()` D-Bus method. For each session a thread is created in dnf5daemon-server. This spends a couple of hundred megabytes of memory in the process. Further connections will become impossible, likely because no more threads can be spawned by the D-Bus service.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	6.5 MEDIUM	LOCAL	LOW	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
fedora	CNA	6.5 MEDIUM	LOCAL	LOW	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 15%

Affected Products (NVD)

Vendor	Product	Version
rpm-software-management	dnf5	𝑥 < 5.1.17

𝑥

= Vulnerable software versions

Known Exploits!

Common Weakness Enumeration

CWE-400 - Uncontrolled Resource Consumption
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References

https://www.openwall.com/lists/oss-security/2024/03/04/2