5.5med
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 arb…
Published 9 y ago · modified 4 mo ago · JSON
CVSS
5.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.3%
percentile 21%
Public exploits
0
none known
Summary
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 (EPSS)
0.28% probability of exploitation in the next 30 days, higher than 21% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
- CWE-665 Improper Initialization
References
- bugs.unrealircd.org /view.php?id=4990 · x_refsource_MISC, x_transferred
- securityfocus.com /bid/100507 · vdb-entry, x_refsource_BID, x_transferred
Sources
- CVE List: CVE-2017-13649
- NVD: CVE-2017-13649
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.