Denial of service in IBM iNotes - CVE-2017-7957
Published: October 4, 2017 / Updated: October 11, 2017
Vulnerability identifier: #VU8802
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-7957
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: IBM Corporation
Affected software:
IBM iNotes
IBM iNotes
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to XStream mishandles attempts to create an instance of the primitive type 'void' during unmarshalling when a certain denyTypes workaround is not used. A remote attacker can perform demonstrated by an xstream.fromXML("<void/>") call, trigger an unmarshalling error in XStream and cause the target service to crash.
Successful exploitation of the vulnerability results in denial of service.
How to mitigate CVE-2017-7957
Install update from vendor's website.