#VU6184 Buffer overflow in Linux kernel - CVE-2017-7184
Published: March 30, 2017 / Updated: October 11, 2021
Vulnerability identifier: #VU6184
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-7184
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local attacker to execute arbitrary code on the target system with escalated privileges.
The vulnerability exists due to boundary error in xfrm_replay_verify_len() function in net/xfrm/xfrm_user.c in Linux kernel when validating data after an XFRM_MSG_NEWAE update. A local use can trigger heap-based buffer overflow by leveraging the CAP_NET_ADMIN capability and execute arbitrary code on the target system with root privileges.
Successful exploitation of this vulnerability may allow an attacker to compromise vulnerable system.
This vulnerability was demonstrated during the Pwn2Own competition at CanSecWest 2017 for the Ubuntu 16.10 linux-image-* package 4.8.0.41.52.
Remediation
Install update from GIT repository.