ESB-2018.0348 - [Debian] squid3: Denial of service - Remote with user interaction 2018-02-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0348
              [SECURITY] [DLA 1266-1] squid3 security update
                              5 February 2018

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        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: 
   https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html

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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.

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

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