CVE-2021-31806

Medium

Description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Squid

PublishedMay 27, 2021

First seenMay 27, 2021

How to fix

Update

squid-cache squid4.15, 5.0.6 or later

Vendor advisories

debian.org/security/2021/dsa-4924
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/

Affected products

Product	Affected versions	Fixed in
squid-cache squid	v < 4.15, 5.0 ≤ v < 5.0.6	4.15, 5.0.6
debian debian_linux	9.0, 10.0	—
fedoraproject fedora	33, 34	—
netapp cloud_manager	No range specified	—

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