CVE-2019-11356

cyrus-imapd: buffer overflow in CalDAV request handling triggered by a long iCalendar property name

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Severity

Important

Red Hat Product Security

5.6

CVSS 3.0

Review impact separately from score.

Published · June 4, 2019

Updated · November 22, 2025

Description

A flaw was found in the CalDAV feature in httpd in Cyrus IMAP. This flaw allows a remote attacker to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.6
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer