• [SECURITY] [DSA 2548-1] tor security update

    From Moritz Muehlenhoff@1:229/2 to All on Thu Sep 13 21:30:03 2012
    From: [email protected]

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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-2548-1 [email protected] http://www.debian.org/security/ Moritz Muehlenhoff September 13, 2012 http://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : tor
    Vulnerability : several
    Problem type : remote
    Debian-specific: no
    CVE ID : CVE-2012-3518 CVE-2012-3519 CVE-2012-4419

    Severel vulnerabilities have been discovered in Tor, an online privacy
    tool.

    CVE-2012-3518

    Avoid an uninitialised memory read when reading a vote or consensus
    document that has an unrecognized flavour name. This could lead to
    a remote, resulting in denial of service.

    CVE-2012-3519

    Try to leak less information about what relays a client is choosing to
    a side-channel attacker.

    CVE-2012-4419

    By providing specially crafted date strings to a victim tor instance,
    an attacker can cause it to run into an assertion and shut down

    Additionally the update to stable includes the following fixes:
    - - When waiting for a client to renegotiate, don't allow it to add any
    bytes to the input buffer. This fixes a potential DoS issue
    [tor-5934, tor-6007].

    For the stable distribution (squeeze), these problems have been fixed in version 0.2.2.39-1.

    For the unstable distribution, these problems have been fixed in version 0.2.3.22-rc-1.

    We recommend that you upgrade your tor packages.

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: http://www.debian.org/security/

    Mailing list: [email protected]
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