Apache Tomcat JK ISAPI Connector up to 1.2.42 IIS/ISAPI path traversal

Summaryinfo

A vulnerability was found in Apache Tomcat JK ISAPI Connector up to 1.2.42. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component IIS/ISAPI. Executing a manipulation can lead to path traversal. This vulnerability is registered as CVE-2018-1323. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Apache Tomcat JK ISAPI Connector up to 1.2.42 (Application Server Software). This vulnerability affects some unknown processing of the component IIS/ISAPI. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it to the URI-worker map did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via IIS, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing Tomcat via the reverse proxy.

The bug was discovered 03/12/2018. The weakness was published 03/12/2018 with Biznet Bilisim A.S. (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2018-1323 since 12/07/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/21/2023). The MITRE ATT&CK project declares the attack technique as T1006.

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 103389†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Application Server Software

Vendor

• Apache

Name

• Tomcat JK ISAPI Connector

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12
• 1.2.13
• 1.2.14
• 1.2.15
• 1.2.16
• 1.2.17
• 1.2.18
• 1.2.19
• 1.2.20
• 1.2.21
• 1.2.22
• 1.2.23
• 1.2.24
• 1.2.25
• 1.2.26
• 1.2.27
• 1.2.28
• 1.2.29
• 1.2.30
• 1.2.31
• 1.2.32
• 1.2.33
• 1.2.34
• 1.2.35
• 1.2.36
• 1.2.37
• 1.2.38
• 1.2.39
• 1.2.40
• 1.2.41
• 1.2.42

License

• open-source

Website

• Vendor: https://www.apache.org/

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

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