Medium Severity
Affected system
Sybase platform
CVSS
5.4
Component
BC-SYB-PB
Patch Day
2015-09
Released on
2015/09/08
SAP Note
2201710
Workaround
No
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Advisory

On 08.09.2015 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within Sybase platform.

SAP Note 2201710 addresses "Fixing Logjam and Alternative chains certificate forgery vulnerabilities in multiple SAP Sybase products" to prevent certificate spoofing with a medium risk for exploitation.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance, the team suggests.

Risk specification

An unauthenticated attacker could downgrade vulnerable TLS connections or cause certain checks on untrusted certificates to be bypassed, such as the CA flag, enabling them to use a valid leaf certificate to act as a CA and "issue" an invalid certificate. This may lead to a successful certificate spoofing where the attacked may impersonate users or servers.

Solution

The fixes make sure that no connection downgrading can occur and all certificate checks are properly enforced.

The advisory is valid for

 

 

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