Home/CVE/In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-log
CVE

CVE-2020-10958

In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-log

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.

MEDIUM · CVSS 5.3 EPSS 0.01504
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

1
dovecot< 2.3.10.1
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Deni...packetstormsecurity.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 May 2020 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2025:14715-1
suse-csafopenSUSE-SU-2024:10726-1
suse-csafopenSUSE-SU-2020:0720-1
suse-csafSUSE-SU-2020:1379-1
suse-csafSUSE-SU-2020:1380-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html
http://seclists.org/fulldisclosure/2020/May/37ExploitThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/05/18/1Mailing ListThird Party Advisory
https://dovecot.org/securityVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/
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