Use After Free in Inspircd
CVE-2019-20918
An issue was discovered in InspIRCd 3 before 3.1.0. The silence module contains a use after free vulnerability. This vulnerability can be used for remote crashing of an InspIRCd server by any user able to fully connect to a server.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- docs.inspircd.org/security/2019-01/ (Vendor Advisory)
- github.com/inspircd/inspircd/commit/bcd65de1ec4bb71591ae417fee649d7ecd37cd57 (Patch, Third Party Advisory)
- github.com/inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-20918?
- CVE-2019-20918 is a medium-severity vulnerability in Inspircd, classified under Use After Free. CVSS score: 6.5/10. Published 2020-09-11.
- How severe is CVE-2019-20918?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-20918 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.