CVE-2019-11500
CRITICAL severity · CVSS 9.8 · Out-of-bounds write
9.8CVSS CRITICAL
Summary
In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)62%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://dovecot.org/pipermail/dovecot-news/2019-August/000417.html ↗
Additional information
- NVD record
- https://dovecot.org/pipermail/dovecot-news/2019-August/000417.htmlPatch
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00024.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00026.html
- https://access.redhat.com/errata/RHSA-2019:2822
- https://access.redhat.com/errata/RHSA-2019:2836
- https://access.redhat.com/errata/RHSA-2019:2885
- https://lists.debian.org/debian-lts-announce/2019/08/msg00035.htmlAdvisory
- http://www.openwall.com/lists/oss-security/2019/08/28/3Advisory