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CVE-2020-10958

Good to know:

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Date: May 18, 2020

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.

Language: C

Severity Score

Related Resources (18)

https://usn.ubuntu.com/4361-1/
https://www.debian.org/security/2020/dsa-4690
https://security-tracker.debian.org/tracker/CVE-2020-10958
http://seclists.org/fulldisclosure/2020/May/37
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/
https://dovecot.org/security
https://www.openwall.com/lists/oss-security/2020/05/18/1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/
http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html
http://www.openwall.com/lists/oss-security/2020/05/18/1
https://security.alpinelinux.org/vuln/CVE-2020-10958
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-10958
https://access.redhat.com/security/cve/CVE-2020-10958
https://nvd.nist.gov/vuln/detail/CVE-2020-10958
https://www.mend.io/vulnerability-database/CVE-2020-10958

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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