Vulnerabilities > CVE-2015-7599 - Integer Overflow or Wraparound vulnerability in Windriver Vxworks
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Forced Integer Overflow This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
References
- http://blogs.windriver.com/wind_river_blog/2015/09/wind-river-vxworks-updateclarification.html
- http://www.securityfocus.com/bid/79205
- https://kb.netapp.com/support/s/article/cve-2015-7599-vxworks-vulnerability-impacting-netapp-e-series-products?language=en_US
- https://security.netapp.com/advisory/ntap-20151029-0001/
- https://www.syscan360.org/slides/2015_EN_AttackingVxWorksFromstoneagetointerstellar_Eric_Yannick.pdf