Debian Security Advisory

DLA-1266-1 squid3 -- LTS security update

Date Reported:
02 Feb 2018
Affected Packages:
squid3
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 888719, Bug 888720.
In Mitre's CVE dictionary: CVE-2018-1000024, CVE-2018-1000027.
More information:

Squid, a high-performance proxy caching server for web clients, has been found vulnerable to denial of service attacks associated with ESI response processing and intermediate CA certificate downloading.

  • CVE-2018-1000024

    Incorrect pointer handling resulted in the ability of a remote server to return a crafted ESI response which could trigger a denial of service for all clients accessing the Squid service. This issue affects the Squid custom ESI parser.

  • CVE-2018-1000027

    Incorrect pointer handling resulted in the possibility of a remote client delivering certain HTTP requests in conjunction with certain trusted server reponses involving the processing of ESI responses or downloading of intermediate CA certificates to trigger a denial of service for all clients accessing the squid service.

For Debian 7 Wheezy, these problems have been fixed in version 3.1.20-2.2+deb7u8.

We recommend that you upgrade your squid3 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS