Friday Squid Blogging: Another Squid

Someone named "Squid" seems to be a "West Country legend." As usual, you can also use this squid post to talk about the security stories in the news that I haven't covered. Blog moderation policy...

The vulnerability of the Squid proxy server, related to reading beyond the buffer in memory, allows attackers to cause a service failure.

The vulnerability of the Squid proxy server is related to reading data beyond the buffer in memory. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

RHSA-2026:20580 Red Hat Security Advisory: squid:4 security update

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RHSA-2026:20565 Red Hat Security Advisory: squid:4 security update

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RHSA-2026:20564 Red Hat Security Advisory: squid:4 security update

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squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling

A flaw was found in Squid. A remote attacker can exploit a heap Use-After-Free vulnerability when handling ICP Internet Cache Protocol traffic. This allows them to perform a reliable and repeatable Denial of Service DoS attack, making the Squid service unavailable. This attack is limited to...

Important: Red Hat Security Advisory: squid:4 security update

An update for the squid:4 module is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common...

squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling

A flaw was found in Squid. A remote attacker can exploit a heap Use-After-Free vulnerability when handling ICP Internet Cache Protocol traffic. This allows them to perform a reliable and repeatable Denial of Service DoS attack, making the Squid service unavailable. This attack is limited to...

Squid: Squid: Denial of Service via crafted ICP traffic

A flaw was found in Squid. A remote attacker can exploit this vulnerability by sending specially crafted ICP Internet Cache Protocol traffic. This can lead to a Denial of Service DoS due to premature resource release and use-after-free vulnerabilities. This attack is possible in Squid deployments...

Important: Red Hat Security Advisory: squid:4 security update

An update for the squid:4 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability...

Squid: Squid: Denial of Service via crafted ICP traffic

A flaw was found in Squid. A remote attacker can exploit this vulnerability by sending specially crafted ICP Internet Cache Protocol traffic. This can lead to a Denial of Service DoS due to premature resource release and use-after-free vulnerabilities. This attack is possible in Squid deployments...

squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling

A flaw was found in Squid. A remote attacker can exploit a heap Use-After-Free vulnerability when handling ICP Internet Cache Protocol traffic. This allows them to perform a reliable and repeatable Denial of Service DoS attack, making the Squid service unavailable. This attack is limited to...

Important: Red Hat Security Advisory: squid:4 security update

An update for the squid:4 module is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service. Red Hat Product Security has rated this...

RHEL 8 : squid:4 (RHSA-2026:20565)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:20565 advisory. Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Deni...

RHEL 8 : squid:4 (RHSA-2026:20564)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:20564 advisory. Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Deni...

RHEL 8 : squid:4 (RHSA-2026:20580)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:20580 advisory. Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Deni...

The vulnerability of the Squid proxy server, related to improper blocking of resources, allows a violator to trigger a service failure.

The vulnerability of the Squid proxy server is related to improper blocking of resources. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

The vulnerability of the Squid proxy server, related to the use of memory after it is freed, allows a hacker to execute arbitrary code.

The vulnerability of the Squid proxy server is related to the use of memory after it is freed. Exploiting this vulnerability allows a remote attacker to execute arbitrary code...

Friday Squid Blogging: Regulating Squid Fishing in the South Pacific

The South Pacific Regional Fisheries Management Organization SPRFMO needs to regulate squid fishing in the South Pacific. As usual, you can also use this squid post to talk about the security stories in the news that I haven't covered. Blog moderation policy...

Astra Linux – Vulnerability in Squid

Squid is a caching proxy for the web that supports HTTP, HTTPS, FTP, and other protocols. Due to a Buffer Overread bug, Squid is vulnerable to a Denial of Service attack targeting the Squid HTTP message processing mechanism. This bug has been fixed in Squid version 6.5. Users are advised to...