Vulnerability CVE-2020-10958
Published: 2020-05-18

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Open-Xchange Dovecot 2.3.10 Null Pointer Dereference / Denial Of Service
Philippe Antoine
20.05.2020

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Dovecot -> Dovecot 

 References:
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html
http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html
http://seclists.org/fulldisclosure/2020/May/37
http://www.openwall.com/lists/oss-security/2020/05/18/1
https://dovecot.org/security
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/
https://usn.ubuntu.com/4361-1/
https://www.debian.org/security/2020/dsa-4690
https://www.openwall.com/lists/oss-security/2020/05/18/1
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