Debian Security Advisory

DLA-1267-1 squid -- LTS security update

Date Reported:
02 Feb 2018
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 888720.
In Mitre's CVE dictionary: 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-2018-1000027

    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 2.7.STABLE9-4.1+deb7u3.

We recommend that you upgrade your squid packages.

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