USN-4477-1: Squid vulnerabilities

Releases

• Ubuntu 20.04 LTS

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)

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)

Update instructions

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

Ubuntu 20.04

• squid - 4.10-1ubuntu1.2

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

References

• CVE-2020-15810
• CVE-2020-15811
• CVE-2020-24606

Related notices

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