CVE-2017-16844 Memory corruption in n/a

Critical 9.8 Published 16 Nov 2017 Updated 5 Aug 2024

Remote attackers can cause denial of service or execute arbitrary code via crafted emails due to a heap-based buffer overflow in procmail.

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

What is CVE-2017-16844?

CVE-2017-16844 is a critical memory corruption vulnerability in n/a, published on 16 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.

Weakness: CWE-119

Which versions are affected by CVE-2017-16844?

It affects 1 product.

Linux distribution packages (16)

`procmail` Red Hat:enterprise_linux:7::client	All versions	`0:3.22-36.el7_4.1`
`procmail-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:3.22-36.el7_4.1`
`procmail` Red Hat:enterprise_linux:7::server	All versions	`0:3.22-36.el7_4.1`
`procmail-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:3.22-36.el7_4.1`
`procmail` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.22-36.el7_4.1`
`procmail-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.22-36.el7_4.1`
`procmail` SUSE:Linux Enterprise Desktop 12 SP2	All versions	`3.22-269.3.5`
`procmail` SUSE:Linux Enterprise Desktop 12 SP3	All versions	`3.22-269.3.5`
`procmail` SUSE:Linux Enterprise Server 11 SP4	All versions	`3.22-240.8.3.1`
`procmail` SUSE:Linux Enterprise Server 12 SP2	All versions	`3.22-269.3.5`
`procmail` SUSE:Linux Enterprise Server 12 SP3	All versions	`3.22-269.3.5`
`procmail` SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2	All versions	`3.22-269.3.5`
`procmail` SUSE:Linux Enterprise Server for SAP Applications 11 SP4	All versions	`3.22-240.8.3.1`
`procmail` SUSE:Linux Enterprise Server for SAP Applications 12 SP2	All versions	`3.22-269.3.5`
`procmail` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`3.22-269.3.5`
`procmail` openSUSE:Tumbleweed	All versions	`3.22-277.3`

Products include Procmail Procmail.

How do I fix CVE-2017-16844?

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-2017-16844 being exploited?

There is no known exploitation of CVE-2017-16844 in the wild and no public exploit code.

Sources

Also known as AZL-36982, AZL-6803, AZL-7332, DEBIAN-CVE-2017-16844, DLA-1173-1, DSA-4041-1 and 7 more.