Ubuntu Security Notice 6857-1 - Joshua Rogers discovered that Squid incorrectly handled requests with the urn: scheme. A remote attacker could possibly use this issue to cause Squid to consume resources, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS. It was discovered that Squid incorrectly handled SSPI and SMB authentication. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 16.04 LTS.
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Red Hat Security Advisory 2021-4292-02 - Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Issues addressed include denial of service and integer overflow vulnerabilities.
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Debian Linux Security Advisory 4924-1 - Multiple denial of service vulnerabilities were discovered in the Squid proxy caching server.
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Ubuntu Security Notice 4981-1 - Joshua Rogers discovered that Squid incorrectly handled requests with the urn: scheme. A remote attacker could possibly use this issue to cause Squid to consume resources, leading to a denial of service. Joshua Rogers discovered that Squid incorrectly handled requests to the Cache Manager API. A remote attacker with access privileges could possibly use this issue to cause Squid to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. Various other issues were also addressed.
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Gentoo Linux Security Advisory 202105-14 - Multiple vulnerabilities have been found in Squid, the worst of which could result in a Denial of Service condition. Versions less than 4.15 are affected.
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