CVE-2020-12674

high-risk

Published 2020-08-12

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.

Do I need to act?

21.3% chance of exploitation in next 30 days

EPSS score — higher than 79% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Dovecot

Debian Linux

Ubuntu Linux

Fedora

Debian Canonical Fedoraproject Dovecot

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

Third Party Advisory https://security.gentoo.org/glsa/202009-02

Third Party Advisory https://usn.ubuntu.com/4456-1/

Third Party Advisory https://usn.ubuntu.com/4456-2/

Third Party Advisory https://www.debian.org/security/2020/dsa-4745

Exploit https://www.openwall.com/lists/oss-security/2020/08/12/3

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

Third Party Advisory https://security.gentoo.org/glsa/202009-02

and 4 more references

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high-risk

Severity 26/34 · High

Exploitability 14/34 · Moderate

Exposure 16/34 · Moderate