CVE-2020-12674: In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled

High severity · published Aug 12, 2020

CVE-2020-12674

In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled

7.5

CVSS

6.2%

EPSS

On KEV

Description

In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)6.2% · higher than 93% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

9.0; 10.0 · source: NVD

Dovecot · Dovecot

before 2.3.11.3 · source: NVD

Fedora · Fedoraproject

31; 32; 33 · source: NVD

Ubuntu Linux · Canonical

14.04; 16.04; 18.04; 20.04 · source: NVD

Affected product

Ubuntu Linux

Canonical

All Ubuntu Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-12674

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-12674

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00059.html

Vendor Advisory

https://dovecot.org/security

Third Party Advisory

https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/