Use After Free in Dovecot
CVE-2020-10958
In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.061 (93.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.061 · newest: 0.061 · change: 0.000
Affected products
Weakness classification (CWE)
References
- dovecot.org/security (Vendor Advisory)
- www.openwall.com/lists/oss-security/2020/05/18/1 (Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/05/18/1 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4361-1/ (vendor-advisory)
- seclists.org/fulldisclosure/2020/May/37 (mailing-list, Exploit, Third Party Advisory)
- packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-D…
- www.debian.org/security/2020/dsa-4690 (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-10958?
- CVE-2020-10958 is a medium-severity vulnerability in Dovecot, classified under Use After Free. CVSS score: 5.3/10. Published 2020-05-18.
- How severe is CVE-2020-10958?
- Medium severity. CVSS v3 base score is 5.3 out of 10.