CVE-2020-29599 Command injection in n/a

High 7.8 Published 7 Dec 2020 Updated 4 Aug 2024

Attackers can execute arbitrary shell commands by injecting malicious input into the password field when processing PDF files with ImageMagick.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2020-29599?

CVE-2020-29599 is a high-severity command injection vulnerability in Debian Debian Linux, published on 7 Dec 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

ImageMagick before 6.9.11-40 and 7.x before 7.0.10-40 mishandles the -authenticate option, which allows setting a password for password-protected PDF files. The user-controlled password was not properly escaped/sanitized and it was therefore possible to inject additional shell commands via coders/pdf.c.

Weakness: CWE-91

Which versions are affected by CVE-2020-29599?

It affects 2 products.

Linux distribution packages (28)

`ImageMagick` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++-devel` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-devel` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-doc` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-perl` Red Hat:enterprise_linux:7::client	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++-devel` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-debuginfo` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-devel` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-doc` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-perl` Red Hat:enterprise_linux:7::computenode	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++-devel` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-devel` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-doc` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-perl` Red Hat:enterprise_linux:7::server	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-c++-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-doc` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`
`ImageMagick-perl` Red Hat:enterprise_linux:7::workstation	All versions	`0:6.9.10.68-5.el7_9`

Products include Debian Debian Linux, Imagemagick Imagemagick.

How do I fix CVE-2020-29599?

Upgrade to a fixed version.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2020-29599 being exploited?

There is no known exploitation of CVE-2020-29599 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Debian Debian Linux vulnerabilities

Sources

Also known as CLSA-2021-1617641265, DEBIAN-CVE-2020-29599, GHSA-685x-r4m9-ffxr, JLSEC-2026-876, RHSA-2021:0024, UBUNTU-CVE-2020-29599.