ESB-2019.0392 - [Debian] python3.4: Multiple vulnerabilities 2019-02-08

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             AUSCERT External Security Bulletin Redistribution

                  [DLA 1663-1] python3.4 security update
                              8 February 2019


        AusCERT Security Bulletin Summary

Product:           python3.4
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-5010 CVE-2018-20406 CVE-2016-5699
                   CVE-2016-5636 CVE-2016-0772 

Reference:         ESB-2019.0336

Original Bulletin:

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Package        : python3.4
Version        : 3.4.2-1+deb8u2
CVE ID         : CVE-2016-0772 CVE-2016-5636 CVE-2016-5699 CVE-2018-20406 

This DLA fixes a a problem parsing x509 certificates, an pickle integer
overflow, and some other minor issues:


    The smtplib library in CPython does not return an error when StartTLS fails,
    which might allow man-in-the-middle attackers to bypass the TLS protections by
    leveraging a network position between the client and the registry to block the
    StartTLS command, aka a "StartTLS stripping attack."


    Integer overflow in the get_data function in zipimport.c in CPython
    allows remote attackers to have unspecified impact via a negative data size
    value, which triggers a heap-based buffer overflow.


    CRLF injection vulnerability in the HTTPConnection.putheader function in
    urllib2 and urllib in CPython allows remote attackers to inject arbitrary HTTP
    headers via CRLF sequences in a URL.


    Modules/_pickle.c has an integer overflow via a large LONG_BINPUT value
    that is mishandled during a "resize to twice the size" attempt. This issue
    might cause memory exhaustion, but is only relevant if the pickle format is
    used for serializing tens or hundreds of gigabytes of data.


    NULL pointer dereference using a specially crafted X509 certificate.

For Debian 8 "Jessie", these problems have been fixed in version

We recommend that you upgrade your python3.4 packages.

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

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