Denial of Service was found in Horde_Image 2.x before 2.5.0 via a crafted URL to the "Null" image driver.

Fariskhi Vidyan and Thomas Jarosch discovered several vulnerabilities in php-horde-image, the image processing library for the Horde groupware suite. They would allow an attacker to cause a denial-of-service or execute arbitrary code.

**Horde_Image 2.5.1**

  - [mjr] SECURITY: Fix more potential places for command     injections.

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**Horde_Image 2.5.0**

  - [mjr] **SECURITY**: Prevent DOS attack by preventing an     infinite loop in certain conditions (CVE-2017-9773,     reported by Fariskhi Vidyan).

  - [mjr] **SECURITY**: Prevent RCE attacks by properly     sanitizing shell arguments (CVE-2017-9774, reported by     Fariskhi Vidyan).

  - [jan] Add blur effect.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Michael J Rubinsky reports :

The second vulnerability (CVE-2017-9773) is a DOS vulnerability. This only affects Horde installations that do not have a configured image handling backend, and thus use the 'Null' image driver. It is exploitable by a logged in user clicking on a maliciously crafted URL.

ID	Name	Product	Family	Severity
111985	Debian DSA-4276-1 : php-horde-image - security update	Nessus	Debian Local Security Checks	high
101592	Fedora 26 : php-horde-Horde-Image (2017-28387b61fd)	Nessus	Fedora Local Security Checks	high
101498	Fedora 24 : php-horde-Horde-Image (2017-299525e757)	Nessus	Fedora Local Security Checks	high
101243	Fedora 25 : php-horde-Horde-Image (2017-6f7d6fbccc)	Nessus	Fedora Local Security Checks	high
100974	FreeBSD : pear-Horde_Image -- DoS vulnerability (00e4050b-56c1-11e7-8e66-08606e46faad)	Nessus	FreeBSD Local Security Checks	medium

Detections

Analytics

CVE-2017-9773

medium

Tenable Plugins

high

high

high

high

medium