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Ubuntu 20.04 LTS: USN-4477-1 Critical: Squid Cache Poisoning and DoS

ubuntu
Calendar Grey August 27, 2020
Dist Ubuntu Esm H88
Numerous vulnerabilities addressed in Apache for Debian 10 Buster. Upgrade today for safety against web service threats.
Several security issues were fixed in Squid.

Summary

Several security issues were fixed in Squid.

Software Description:

- 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)

Régis 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)

Topics%20covered

Topics Covered

security advisory denial of service squid cache poisoning ubuntu

Update Instructions

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

Ubuntu 20.04 LTS:
  squid                           4.10-1ubuntu1.2

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

References

https://ubuntu.com/security/notices/USN-4477-1

CVE-2020-15810, CVE-2020-15811, CVE-2020-24606

Severity
critical
Lowest
Low
Medium
High
Critical

August 27, 2020

Topics%20covered

Topics Covered

security advisory denial of service squid cache poisoning ubuntu

Package Information

https://launchpad.net/ubuntu/+source/squid/4.10-1ubuntu1.2

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