CVE-2020-10957

Public Exploit

Description

In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 15.62% Top 10%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory dovecot.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://dovecot.org/security vendor advisory
https://www.openwall.com/lists/oss-security/2020/05/18/1 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2020/05/18/1 third party advisory mailing list
https://usn.ubuntu.com/4361-1/ vendor advisory
http://seclists.org/fulldisclosure/2020/May/37 mailing list exploit third party advisory
http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html
https://www.debian.org/security/2020/dsa-4690 vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/ vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-10957?
CVE-2020-10957 has been scored as a high severity vulnerability.
How to fix CVE-2020-10957?
To fix CVE-2020-10957, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-10957 being actively exploited in the wild?
It is possible that CVE-2020-10957 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~16% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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