CVE-2017-13649: Medium severity unrealircd vulnerability
UnrealIRCd 4.0.13 and earlier creates a PID file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for PID file modification before a root script executes a "kill cat /pathname" command. NOTE: the vendor indicates that there is no common or recommended scenario in which a root script would execute this kill command.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2017-13649?
CVE-2017-13649 has a medium severity rating of 5.5 according to the CVSS v3.0 scoring.
How do I fix CVE-2017-13649?
To fix CVE-2017-13649, upgrade UnrealIRCd to version 4.0.14 or later where the vulnerability is addressed.
What systems are affected by CVE-2017-13649?
CVE-2017-13649 affects UnrealIRCd version 4.0.13 and earlier.
What does CVE-2017-13649 vulnerability exploit?
CVE-2017-13649 exploits the creation of a PID file after dropping privileges to a non-root account, allowing process killing by local users.
What impact does CVE-2017-13649 have on system security?
The impact of CVE-2017-13649 includes the potential for local users to terminate arbitrary processes, which could disrupt services and lead to further exploitation.