SB2019100132 - Permissions, Privileges, and Access Controls in Linux kernel
Published: October 1, 2019 Updated: November 13, 2019
Security Bulletin ID
SB2019100132
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-17056)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the llcp_sock_create() function in net/nfc/llcp_sock.c in the AF_NFC network module for the Linux kernel does not enforce CAP_NET_RAW. A local unprivileged user can create a raw socket.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00064.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0edc3f703f7bcaf550774b5d43ab727bcd0fe06b
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a359798b176183ef09efb7a3dc59abad1cc7104