CVE-2015-7547

glibc vulnerability test script

This provides a shell script for testing the glibc vulnerability CVE-2015-7547. It's written for rpm based systems such as Red Hat Enterprise Linux / RHEL / CentOS (5/6/7). Detection for other distributions may follow.

Resolution

1. Run bin/test-glibc.sh to check if your system is vulnerable
2. Update the glibc packages
3. Reboot the system or restart all affected services
4. Run bin/test-glibc.sh again to verify

In case you are unable to restart the entire system after applying the update, execute the following command to list all running processes (not restricted to services) still using the old [in-memory] version of glibc on your system.

lsof +c0 -d DEL | awk 'NR==1 || /libc-/ {print $2,$1,$4,$NF}' | column -t

Further information