Vulnerability Details : CVE-2020-10958
Potential exploit
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 category: Memory Corruption
Products affected by CVE-2020-10958
- cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-10958
0.80%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-10958
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
MITRE | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2020-10958
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-10958
-
https://www.openwall.com/lists/oss-security/2020/05/18/1
oss-security - Multiple vulnerabilities in Dovecot IMAP serverMailing List;Third Party Advisory
-
https://usn.ubuntu.com/4361-1/
USN-4361-1: Dovecot vulnerabilities | Ubuntu security notices
-
http://www.openwall.com/lists/oss-security/2020/05/18/1
oss-security - Multiple vulnerabilities in Dovecot IMAP serverMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/
[SECURITY] Fedora 32 Update: dovecot-2.3.10.1-1.fc32 - package-announce - Fedora Mailing-Lists
-
https://dovecot.org/security
SecurityVendor Advisory
-
https://www.debian.org/security/2020/dsa-4690
Debian -- Security Information -- DSA-4690-1 dovecot
-
http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html
Open-Xchange Dovecot 2.3.10 Null Pointer Dereference / Denial Of Service ≈ Packet Storm
-
http://seclists.org/fulldisclosure/2020/May/37
Full Disclosure: Multiple vulnerabilities in Dovecot IMAP serverExploit;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html
[security-announce] openSUSE-SU-2020:0720-1: important: Security update
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/
[SECURITY] Fedora 31 Update: dovecot-2.3.10.1-1.fc31 - package-announce - Fedora Mailing-Lists
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