ESB-2018.3758 - [Win][UNIX/Linux][Debian] suricata: Multiple vulnerabilities 2018-12-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3758
                        suricata - security update
                              5 December 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           suricata
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
                   Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated
                   Denial of Service              -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-6794 CVE-2017-15377 CVE-2017-7177

Original Bulletin: 
   https://security-tracker.debian.org/tracker/DLA-1603-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running suricata check for an updated version of the software for 
         their operating system.

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Package        : suricata
Version        : 2.0.7-2+deb8u3
CVE ID         : CVE-2017-7177 CVE-2017-15377 CVE-2018-6794
Debian Bug     : 856648 889842 856649

Several issues were found in suricata, an intrusion detection and
prevention tool.

CVE-2017-7177

    Suricata has an IPv4 defragmentation evasion issue caused by lack
    of a check for the IP protocol during fragment matching.

CVE-2017-15377

    It was possible to trigger lots of redundant checks on the content
    of crafted network traffic with a certain signature, because of
    DetectEngineContentInspection in detect-engine-content-inspection.c.
    The search engine doesn't stop when it should after no match is
    found; instead, it stops only upon reaching inspection-recursion-
    limit (3000 by default).

CVE-2018-6794

    Suricata is prone to an HTTP detection bypass vulnerability in
    detect.c and stream-tcp.c. If a malicious server breaks a normal
    TCP flow and sends data before the 3-way handshake is complete,
    then the data sent by the malicious server will be accepted by web
    clients such as a web browser or Linux CLI utilities, but ignored
    by Suricata IDS signatures. This mostly affects IDS signatures for
    the HTTP protocol and TCP stream content; signatures for TCP packets
    will inspect such network traffic as usual.

TEMP-0856648-2BC2C9 (no CVE assigned yet)

    Out of bounds read in app-layer-dns-common.c.
    On a zero size A or AAAA record, 4 or 16 bytes would still be read.

For Debian 8 "Jessie", these problems have been fixed in version
2.0.7-2+deb8u3.

We recommend that you upgrade your suricata 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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