SB2019112721 - Information disclosure in FreeBSD

Description

This security bulletin contains information about 1 vulnerability.

1) Information disclosure (CVE-ID: CVE-2011-2480)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Information Disclosure vulnerability in the 802.11 stack, as used in FreeBSD before 8.2 and NetBSD when using certain non-x86 architectures. A signedness error in the IEEE80211_IOC_CHANINFO ioctl allows a local unprivileged user to cause the kernel to copy large amounts of kernel memory back to the user, disclosing potentially sensitive information.

Remediation

Install update from vendor's website.

References

• https://access.redhat.com/security/cve/cve-2011-2480
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631160
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631161
• https://security-tracker.debian.org/tracker/CVE-2011-2480
• https://www.openwall.com/lists/oss-security/2011/06/20/15