Medium severity · published Aug 23, 2017
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…
5.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UN
Unrealircd · Unrealircd
through 4.0.13 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-13649
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-13649
Third Party Advisory
http://www.securityfocus.com/bid/100507
Issue Tracking
https://bugs.unrealircd.org/view.php?id=4990
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