Integer overflow in VxWorks

1) Integer overflow

EUVDB-ID: #VU39725

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-7599

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Integer overflow in the _authenticate function in svc_auth.c in Wind River VxWorks 5.5 through 6.9.4.1, when the Remote Procedure Call (RPC) protocol is enabled, allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a username and password.

Mitigation

Install update from vendor's website.

Vulnerable software versions

VxWorks: 5.5 - 6.9

External links

http://blogs.windriver.com/wind_river_blog/2015/09/wind-river-vxworks-updateclarification.html
http://www.securityfocus.com/bid/79205
http://kb.netapp.com/support/s/article/cve-2015-7599-vxworks-vulnerability-impacting-netapp-e-series-products?language=en_US
http://security.netapp.com/advisory/ntap-20151029-0001/
http://www.syscan360.org/slides/2015_EN_AttackingVxWorksFromstoneagetointerstellar_Eric_Yannick.pdf

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.