CVE-2019-11356 Memory corruption in n/a

Critical 9.8 Published 3 Jun 2019 Updated 4 Aug 2024

Remote attackers can execute arbitrary code via a crafted HTTP PUT request in the CalDAV feature of Cyrus IMAP.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-11356?

CVE-2019-11356 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 3 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.

Weakness: CWE-787

Which versions are affected by CVE-2019-11356?

It affects 8 products.

Linux distribution packages (7)

`cyrus-imapd` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`
`cyrus-imapd-debuginfo` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`
`cyrus-imapd-debugsource` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`
`cyrus-imapd-utils` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`
`cyrus-imapd-utils-debuginfo` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`
`cyrus-imapd-vzic` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`
`cyrus-imapd-vzic-debuginfo` Red Hat:enterprise_linux:8::appstream	All versions	`0:3.0.7-15.el8_0.1`

Products include Canonical Ubuntu Linux, Cyrus Imap, Debian Debian Linux, Fedoraproject Fedora, Redhat Enterprise Linux, Redhat Enterprise Linux Eus and 2 more.

How do I fix CVE-2019-11356?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-11356 being exploited?

There is no known exploitation of CVE-2019-11356 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-11356, DSA-4458-1, GHSA-v5c4-xfxj-8x84, MGASA-2019-0219, RHSA-2019:1771, UBUNTU-CVE-2019-11356.