Advisory

On 11.02.2020 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within SAP Mobile Platform.

SAP Note 2880993 addresses "[CVE-2020-6177] Missing XML Validation vulnerability in SAP Mobile Platform" to prevent external entity tunneling (xxe) with a medium risk for exploitation.

A workaround does exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance, the team suggests.

Risk specification

SAP Mobile Platform does not sufficiently validate an XML document which gives an authenticated attacker the opportunity to supply malicious input which could lead to partial denial of service.

Solution

SAP Mobile Platform 3.0 SP17 PL03 was altered to completely disable Entity resolution. Circumstances exist that prevent the timely installation of a patch provided by the manufacturer. In such cases, you may consider applying the suggested workaround as a temporary or compensating mitigation: "Filter engine on IDS/IPS/firewall systems screening for bogus external entity requests.".

The advisory is valid for

SAP_MOBILE_PLATFORM_RUNTIME 3.0

Releated advisories

Disclaimer

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The advisories found within the SecurityBridge advisory are generated and continuously enriched by our Team at SecurityBridge and affiliated security consultants, partners, customers of the SecurityBridge Platform, SAP support, and advisory groups.

We do not disclose zero-day vulnerabilities unless a security patch has been made available to the public. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability.

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Notifications

Affected system SAP Mobile Platform

CVSS 4.3

Component MOB-ONP-SEC

Patch Day2020-02

Released on2020/02/11

SAP Note 2880993

Workaround Yes

Advisory

Risk specification

Solution

Disclaimer

_{Affected system}
SAP Mobile Platform

_CVSS
4.3

_Component
MOB-ONP-SEC

_{Patch Day}
2020-02

_{Released
on}
2020/02/11

_{SAP Note}
2880993

_Workaround
Yes