Vulnerability · Published May 8, 2024 · Assigned by fedora

CVE-2024-1930No Limit on Number of Open Sessions / Bad Session Close Behaviour

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in dnf5daemon-server from Fedora. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 77.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Fedora	dnf5daemon-server	5.1.16<=

Weakness: CWE-400 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

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