Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.5%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 2.1
References
Products affected by CVE-2017-13649
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cpe:2.3:a:unrealircd:unrealircd:3.2.10
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cpe:2.3:a:unrealircd:unrealircd:3.2.10.1
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cpe:2.3:a:unrealircd:unrealircd:3.2.10.2
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cpe:2.3:a:unrealircd:unrealircd:3.2.10.5
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cpe:2.3:a:unrealircd:unrealircd:4.0.0
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cpe:2.3:a:unrealircd:unrealircd:4.0.1
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cpe:2.3:a:unrealircd:unrealircd:4.0.10
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cpe:2.3:a:unrealircd:unrealircd:4.0.11
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cpe:2.3:a:unrealircd:unrealircd:4.0.12
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cpe:2.3:a:unrealircd:unrealircd:4.0.13
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cpe:2.3:a:unrealircd:unrealircd:4.0.2
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cpe:2.3:a:unrealircd:unrealircd:4.0.3
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cpe:2.3:a:unrealircd:unrealircd:4.0.3.1
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cpe:2.3:a:unrealircd:unrealircd:4.0.4
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cpe:2.3:a:unrealircd:unrealircd:4.0.5
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cpe:2.3:a:unrealircd:unrealircd:4.0.6
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cpe:2.3:a:unrealircd:unrealircd:4.0.7
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cpe:2.3:a:unrealircd:unrealircd:4.0.8
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cpe:2.3:a:unrealircd:unrealircd:4.0.8.1
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cpe:2.3:a:unrealircd:unrealircd:4.0.8.4
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cpe:2.3:a:unrealircd:unrealircd:4.0.9