Re: CERT Advisory CA-97.28 - Teardrop_Land

From: Ron Holt (ronat_private)
Date: Fri Dec 19 1997 - 10:11:07 PST

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    On Wed, Dec 17, 1997 at 01:26:45AM +0000, Alan Cox wrote:
    > > > Red Hat Software
    > > > ================
    > > >
    > > > Topic 1 - Teardrop
    > > >
    > > > Linux is not vulnerable.
    > >
    > > It's well known that versions of Linux prior to publishing of the
    > > teardrop attack *were* vulnerable.  The above borders on an outright
    > > lie.
    >
    > I've already moaned. The correct answer is:
    >
    > Linux
    >
    > Prior to 2.0.31 and earlier are vulnerable to teardrop
    
    Again - if not patched.
    
    >                 2.0.32 and above are not.
    
    Caldera's security advisory on this subject points to a version of 2.0.29
    (to maintain compatibility with the kernel from our last release) plus
    Teardrop and FOOF patches (http://www.caldera.com/tech-ref/security/).
    
    > RedHat 5.0 ships with a 2.0.31+patches that is not vulnerable. RH5.0
    > update for the 2.0.32 kernel is on ftp.redhat.com
    
    Apparently along with others, we've also recommended CERT reword the
    "Linux is not vulnerable" line.  The section of their advisory they added
    for us clarifies the Linux situation a bit better, but as of today, the
    other sections of their advisory still reads as originally worded.
    
    FYI- the updated CERT advisory in question is at:
    
            ftp://ftp.cert.org/pub/cert_advisories/CA-97.28.Teardrop_Land
    
    Ron
    
    --
    Ron Holt <ronat_private> [Caldera, Inc.] http://www.holt.org
    



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