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Squid 1.0 < 4.14, 5.0 < 5.0.5 DoS Vulnerability (SQUID-2021:3)

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

6.1

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:M/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

1 year ago

Modified

Modified

1 year ago

Summary

Squid is prone to a denial of service (DoS) vulnerability in the Cache Manager.

Insight

Insight

Due to an incorrect parser validation bug Squid is vulnerable to a DoS attack against the Cache Manager API. This problem allows a trusted client to trigger memory leaks which over time lead to a DoS against Squid and the machine it is operating on. This attack is limited to clients with Cache Manager API access privilege.

Affected Software

Affected Software

Squid version 1.0 through 4.14 and 5.0 through 5.0.5.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 4.15, 5.0.6 or later. See the referenced vendor advisory for a workaround.

Common Vulnerabilities and Exposures (CVE)