CVE-2017-13649

Description

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Third-Party Advisory securityfocus.com Third-Party Advisory unrealircd.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugs.unrealircd.org/view.php?id=4990 issue tracking third party advisory
http://www.securityfocus.com/bid/100507 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-13649?
CVE-2017-13649 has been scored as a medium severity vulnerability.
How to fix CVE-2017-13649?
To fix CVE-2017-13649, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-13649 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-13649 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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