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             AUSCERT External Security Bulletin Redistribution

              [SECURITY] [DLA 1266-1] squid3 security update
                              5 February 2018


        AusCERT Security Bulletin Summary

Product:           squid3
Publisher:         Debian
Operating System:  Debian GNU/Linux 7
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1000027 CVE-2018-1000024 

Reference:         ESB-2018.0227

Original Bulletin: 

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[SECURITY] [DLA 1266-1] squid3 security update

Package        : squid3
Version        : 3.1.20-2.2+deb7u8
CVE ID         : CVE-2018-1000024 CVE-2018-1000027
Debian Bug     : 888719 888720

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.


    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.


    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

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

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