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USN-4477-1: Squid vulnerabilities

27 August 2020

Several security issues were fixed in Squid.

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Releases

Packages

  • squid - Web proxy cache server

Details

Amit Klein discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
smuggling attack, resulting in cache poisoning. (CVE-2020-15810)

RĂ©gis Leroy discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
splitting attack, resulting in cache poisoning. (CVE-2020-15811)

Lubos Uhliarik discovered that Squid incorrectly handled certain Cache
Digest response messages sent by trusted peers. A remote attacker could
possibly use this issue to cause Squid to consume resources, resulting in a
denial of service. (CVE-2020-24606)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-4551-1: squid-purge, squid-cgi, squid3, squidclient, squid-common, squid