PT-2018-9215

CVE-2018-1000024

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Published

2018-01-29

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Updated

2026-10-31

Description by

CVSS 3.1
7.5
High
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions: Squid HTTP Caching Proxy versions 3.0 through 3.5.27 Squid HTTP Caching Proxy versions 4.0 through 4.0.22
Description: The issue is related to Incorrect Pointer Handling in ESI Response Processing, which can cause Denial of Service for all clients using the proxy. This can be exploited when a remote server delivers an HTTP response payload containing valid but unusual ESI syntax.
Recommendations: For Squid HTTP Caching Proxy versions 3.0 through 3.5.27, update to version 4.0.23 or later. For Squid HTTP Caching Proxy versions 4.0 through 4.0.22, update to version 4.0.23 or later.
Exploitability
Exploit
Fix
Vendors
Affected products
Related identifiers
ALT-PU-2018-2314
CESA-2020_1068
CLEANSTART-2025-DG10769
DLA-1266-1
DSA-4122-1
OPENSUSE-SU-2024:11403-1
RHSA-2020:1068
RHSA-2020_1068
SUSE-SU-2018:0636-1
SUSE-SU-2018_0636-1
SUSE-SU-2018:0752-1
SUSE-SU-2018_0752-1
USN-3557-1
USN-4059-2
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