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CVE-2017-13649

UnknownEPSS 0.28%

Last modified

CVE-2017-13649 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.28%

20.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
UnrealircdUnrealircd<= 4.0.13

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-13649?
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.
How severe is CVE-2017-13649?
Severity scoring for CVE-2017-13649 is pending analysis. The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2017-13649?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST