Link following in Linux kernel - CVE-2009-0416
Published: February 4, 2009 / Updated: July 20, 2020
Vulnerability identifier: #VU28387
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2009-0416
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The SSL certificate setup program (genSslCert.sh) in Standards Based Linux Instrumentation for Manageability (SBLIM) sblim-sfcb 1.3.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /var/tmp/key.pem, (2) /var/tmp/cert.pem, and (3) /var/tmp/ssl.cnf temporary files.
Affected software
Linux kernel
How to mitigate CVE-2009-0416
Install update from vendor's website.
Linux kernel - addressed in versions 4.4.166, 4.9.142, 4.14.85