Resource exhaustion in Bluez
CVE-2021-41229
BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.012 (66.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.001
Affected products
- Bluez — versions = 5.58, 5.58
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
References
- github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/11/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20211203-0004/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/10/msg00026.html (mailing-list, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-41229?
- CVE-2021-41229 is a medium-severity vulnerability in Bluez, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2021-11-12.
- How severe is CVE-2021-41229?
- Medium severity. CVSS v3 base score is 4.3 out of 10.