RCE in Dovecot
CVE-2021-33515
The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.029 (86.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.029 · change: +0.000
Affected products
- Dovecot
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
References
- dovecot.org/security (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/06/28/2 (Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202107-41 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/09/msg00032.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33515?
- CVE-2021-33515 is a medium-severity vulnerability in Dovecot, classified under Command Injection. CVSS score: 4.8/10. Published 2021-06-28.
- How severe is CVE-2021-33515?
- Medium severity. CVSS v3 base score is 4.8 out of 10.