SuSE Linux SMT up to 3.0.36 Blocking Element xml external entity reference

Summaryinfo

A vulnerability marked as critical has been reported in SuSE Linux SMT up to 3.0.36. This impacts an unknown function of the component Blocking Element Handler. The manipulation leads to xml external entity reference. This vulnerability is listed as CVE-2018-12471. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in SuSE Linux SMT up to 3.0.36 (Operating System). It has been rated as critical. This issue affects an unknown code of the component Blocking Element Handler. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A External Entity Reference ('XXE') vulnerability in SUSE Linux SMT allows remote attackers to read data from the server or cause DoS by referencing blocking elements. Affected releases are SUSE Linux SMT: versions prior to 3.0.37.

The bug was discovered 10/06/2018. The weakness was presented 10/04/2018 as Bug 1103809 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.suse.com. The identification of this vulnerability is CVE-2018-12471 since 06/15/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 117899 (SUSE SLES11 Security Update : smt (SUSE-SU-2018:2899-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171616 (SUSE Enterprise Linux Security Update for smt, yast2-smt (SUSE-SU-2018:2898-1)).

Upgrading to version 3.0.37 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117899). See VDB-124792 and VDB-124794 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• SuSE

Name

• Linux SMT

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12
• 3.0.13
• 3.0.14
• 3.0.15
• 3.0.16
• 3.0.17
• 3.0.18
• 3.0.19
• 3.0.20
• 3.0.21
• 3.0.22
• 3.0.23
• 3.0.24
• 3.0.25
• 3.0.26
• 3.0.27
• 3.0.28
• 3.0.29
• 3.0.30
• 3.0.31
• 3.0.32
• 3.0.33
• 3.0.34
• 3.0.35
• 3.0.36

License

• open-source

Website

• Vendor: https://www.suse.com/

CPE 2.3info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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