esigate up to 5.2 XSLT injection

Summaryinfo

A vulnerability classified as critical has been found in esigate up to 5.2. Affected by this vulnerability is an unknown functionality of the component XSLT Handler. The manipulation leads to injection. This vulnerability is listed as CVE-2018-1000854. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in esigate up to 5.2 and classified as critical. This issue affects some unknown processing of the component XSLT Handler. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

esigate.org esigate version 5.2 and earlier contains a CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in ESI directive with user specified XSLT that can result in Remote Code Execution. This attack appear to be exploitable via Use of another weakness in backend application to reflect ESI directives. This vulnerability appears to have been fixed in 5.3.

The bug was discovered 10/19/2018. The weakness was presented 12/20/2018 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-1000854 since 12/20/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 62 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• esigate

Version

• 5.0
• 5.1
• 5.2

Website

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

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Be aware that VulDB is the high quality source for vulnerability data.

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