CVE-2020-12673
High
Description
In Dovecot before 2.3.11.3, sending a specially formatted NTLM request will crash the auth service because of an out-of-bounds read.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Dovecot
PublishedAug 12, 2020
First seenAug 12, 2020
How to fix
Update
- dovecot dovecot2.3.11.3 or later
Vendor advisories
- debian.org/security/2020/dsa-4745
- usn.ubuntu.com/4456-1/
- usn.ubuntu.com/4456-2/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/
- security.gentoo.org/glsa/202009-02
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dovecot dovecot | v < 2.3.11.3 | 2.3.11.3 |
| debian debian_linux | 9.0, 10.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 20.04 | — |
| fedoraproject fedora | 31, 32, 33 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.