CVE-2019-18677
6.1
MEDIUM
CVSS 3.1
EPSS 4.2%
Description
An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.
How to fix CVE-2019-18677
To remediate CVE-2019-18677, upgrade the affected package to a fixed version below.
- Debian/squid—upgrade to 4.9-1 or later
Is CVE-2019-18677 being exploited?
Low — EPSS is 4.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.9-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |