Linux Security
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    Debian: DSA-3216-1: tor security update

    Date 06 Apr 2015
    189
    Posted By LinuxSecurity Advisories
    Several vulnerabilities have been discovered in Tor, a connection-based low-latency anonymous communication system: CVE-2015-2928
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    Debian Security Advisory DSA-3216-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                        Moritz Muehlenhoff
    April 06, 2015                         https://www.debian.org/security/faq
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    Package        : tor
    CVE ID         : CVE-2015-2928 CVE-2015-2929
    
    Several vulnerabilities have been discovered in Tor, a connection-based
    low-latency anonymous communication system:
    
    CVE-2015-2928
    
        "disgleirio" discovered that a malicious client could trigger an
        assertion failure in a Tor instance providing a hidden service,
        thus rendering the service inaccessible.
    
    CVE-2015-2929
    
        "DonnchaC" discovered that Tor clients would crash with an
        assertion failure upon parsing specially crafted hidden service
        descriptors.
    
    Introduction points would accept multiple INTRODUCE1 cells on one
    circuit, making it inexpensive for an attacker to overload a hidden
    service with introductions. Introduction points now no longer allow
    multiple cells of that type on the same circuit.
    
    For the stable distribution (wheezy), these problems have been fixed in
    version 0.2.4.27-1.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 0.2.5.12-1.
    
    For the experimental distribution, these problems have been
    fixed in version 0.2.6.7-1.
    
    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: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    

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