Resource exhaustion in Samba
CVE-2021-3670
MaxQueryDuration not honoured in Samba AD DC LDAP
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (83.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.023 · change: +0.001
Affected products
- Samba
- Fedoraproject Fedora — versions 35
- Red Hat Storage — versions 3.0
- Samba — versions Affects Samba 4.1 and newer.
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- bugzilla.samba.org/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)
- gitlab.com/samba-team/samba/-/commit/1d5b155619bc532c46932965b215bd73a920e56f (Patch, Third Party Advisory)
- gitlab.com/samba-team/samba/-/commit/dcfcafdbf756e12d9077ad7920eea25478c29f81 (Patch, Third Party Advisory)
- gitlab.com/samba-team/samba/-/commit/86fe9d48883f87c928bf31ccbd275db420386803 (Patch, Third Party Advisory)
- gitlab.com/samba-team/samba/-/commit/e1ab0c43629686d1d2c0b0b2bcdc90057a792049 (Patch, Third Party Advisory)
- gitlab.com/samba-team/samba/-/commit/2b3af3b560c9617a233c131376c870fce146c002 (Patch, Third Party Advisory)
- gitlab.com/samba-team/samba/-/commit/5f0590362c5c0c5ee20503a67467f9be2d50e73b (Patch, Third Party Advisory)
- gitlab.com/samba-team/samba/-/commit/3507e96b3dcf0c0b8eff7b2c08ffccaf0812a393 (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202309-06 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3670?
- CVE-2021-3670 is a medium-severity vulnerability in Samba, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2022-08-23.
- How severe is CVE-2021-3670?
- Medium severity. CVSS v3 base score is 6.5 out of 10.