CVE-2018-2502 — TRACE method is enabled in SAP Business One Service Layer

TRACE method is enabled in SAP Business One Service Layer . Attacker can use XST (Cross Site Tracing) attack if frontend applications that are using Service Layer has a XSS vulnerability. This has been fixed in SAP Business One Service Layer (B1_ON_HANA, versions 9.2, 9.3).

01What is this vulnerability?

TRACE method is enabled in SAP Business One Service Layer . Attacker can use XST (Cross Site Tracing) attack if frontend applications that are using Service Layer has a XSS vulnerability. This has been fixed in SAP Business One Service Layer (B1_ON_HANA, versions 9.2, 9.3).

02Affected products

Vendor	Product	Versions
SAP	SAP Business One Service Layer (B1_ON_HANA)	= 9.2, = 9.3

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-12-11T23:00:00.000Z
• Last modified: 2024-08-05T04:21:34.181Z

09References

• wiki.scn.sap.com — https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=508559699
• www.securityfocus.com — http://www.securityfocus.com/bid/106173
• launchpad.support.sap.com — https://launchpad.support.sap.com/#/notes/2680492