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    Debian: DSA-2322-1: bugzilla security update

    Date 10 Oct 2011
    Posted By LinuxSecurity Advisories
    Several vulnerabilities were discovered in Bugzilla, a web-based bug tracking system. CVE-2010-4572
    Hash: SHA1
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    Debian Security Advisory DSA-2322-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.                        Jonathan Wiltshire
    October 10, 2011             
    - -------------------------------------------------------------------------
    Package        : bugzilla
    Vulnerability  : several
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-201-2979 CVE-2010-4567 CVE-2010-4568 CVE-2010-4572 
                     CVE-2011-0046 CVE-2011-0048 CVE-2011-2379 CVE-2011-2380 
                     CVE-2011-2381 CVE-2011-2978 
    Several vulnerabilities were discovered in Bugzilla, a web-based bug
    tracking system.
      By inserting particular strings into certain URLs, it was
      possible to inject both headers and content to any
    CVE-2010-4567, CVE-2011-0048
      Bugzilla has a "URL" field that can contain several types
      of URL, including "javascript:" and "data:" URLs. However,
      it does not make "javascript:" and "data:" URLs into
      clickable links, to protect against cross-site scripting
      attacks or other attacks. It was possible to bypass this
      protection by adding spaces into the URL in places that
      Bugzilla did not expect them. Also, "javascript:" and
      "data:" links were *always* shown as clickable to
      logged-out users.
      It was possible for a user to gain unauthorized access to
      any Bugzilla account in a very short amount of time (short
      enough that the attack is highly effective).
      Various pages were vulnerable to Cross-Site Request
      Forgery attacks. Most of these issues are not as serious
      as previous CSRF vulnerabilities.
      When a user changes his email address, Bugzilla trusts
      a user-modifiable field for obtaining the current e-mail
      address to send a confirmation message to. If an attacker
      has access to the session of another user (for example,
      if that user left their browser window open in a public
      place), the attacker could alter this field to cause
      the email-change notification to go to their own address.
      This means that the user would not be notified that his
      account had its email address changed by the attacker.
      For flagmails only, attachment descriptions with a newline
      in them could lead to the injection of crafted headers in
      email notifications when an attachment flag is edited.
      Bugzilla uses an alternate host for attachments when
      viewing them in raw format to prevent cross-site scripting
      attacks. This alternate host is now also used when viewing
      patches in "Raw Unified" mode because Internet Explorer 8
      and older, and Safari before 5.0.6 do content sniffing,
      which could lead to the execution of malicious code.
    CVE-2011-2380 CVE-201-2979
      Normally, a group name is confidential and is only visible
      to members of the group, and to non-members if the group
      is used in bugs. By crafting the URL when creating or
      editing a bug, it was possible to guess if a group existed
      or not, even for groups which weren't used in bugs and so
      which were supposed to remain confidential.
    For the oldstable distribution (lenny), it has not been practical to
    backport patches to fix these bugs. Users of bugzilla on lenny are 
    strongly advised to upgrade to the version in the squeeze distribution.
    For the stable distribution (squeeze), these problems have been fixed in
    For the testing distribution (wheezy) and the unstable distribution (sid),
    the bugzilla packages have been removed.
    We recommend that you upgrade your bugzilla packages.
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at:
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.

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