OpenEMR up to 5.0.1.3 fax_dispatch.php hylafax_enscript os command injection

Summaryinfo

A vulnerability was found in OpenEMR up to 5.0.1.3. It has been declared as critical. Affected is an unknown function of the file interface/fax/fax_dispatch.php. Executing a manipulation of the argument hylafax_enscript as part of Variable can lead to os command injection. This vulnerability appears as CVE-2018-15155. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in OpenEMR up to 5.0.1.3 (Business Process Management Software). This vulnerability affects some unknown processing of the file interface/fax/fax_dispatch.php. The manipulation of the argument hylafax_enscript as part of a Variable leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

OS command injection occurring in versions of OpenEMR before 5.0.1.4 allows a remote authenticated attacker to execute arbitrary commands by making a crafted request to interface/fax/fax_dispatch.php after modifying the "hylafax_enscript" global variable in interface/super/edit_globals.php.

The bug was discovered 08/07/2018. The weakness was presented 08/15/2018 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-15155 since 08/07/2018. The attack can be initiated remotely. Required for exploitation is a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:interface/fax/fax_dispatch.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 5.0.1.4 eliminates this vulnerability.

See VDB-122966, VDB-122967 and VDB-122969 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 5.0.1.0
• 5.0.1.1
• 5.0.1.2
• 5.0.1.3

License

• open-source

Website

• Product: https://github.com/openemr/openemr/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion