CVE-2021-28652
4.9
MEDIUM
CVSS 3.1
EPSS 0.64%
Description
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.
How to fix CVE-2021-28652
To remediate CVE-2021-28652, upgrade the affected package to a fixed version below.
- —upgrade to 4.15-r0 or later
- —upgrade to 4.13-10 or later
Is CVE-2021-28652 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.15-r0
- from 0, < 4.13-10
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |