Debian update for libxstream-java

1) Denial of service

EUVDB-ID: #VU8802

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7957

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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.

Mitigation

Update the affected package to version: 1.4.7-2+deb8u2, 1.4.9-2

Vulnerable software versions

Debian Linux: All versions

External links

http://www-01.ibm.com/support/docview.wss?uid=swg22005235

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.