Linux Security
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    Linux Security

    apcd: symlink attack in apcd

    Date
    2860
    Posted By
    The apcd package as shipped in Debian GNU/Linux 2.1 is vulnerable to a symlink attack. If the apcd process gets a SIGUSR1 signal it will dump its status to /tmp/upsstat. However this file is not opened safely, which makes it a good target for a symlink attack. This has been fixed in version 0.6a.nr-4slink1. We recommend you upgrade your apcd package immediately.
    Date Reported:
    01 Feb 2000
    Affected Packages:
    apcd
    Vulnerable:
    Yes
    For more information:
    The apcd package as shipped in Debian GNU/Linux 2.1 is vulnerable to a symlink attack. If the apcd process gets a SIGUSR1 signal it will dump its status to /tmp/upsstat. However this file is not opened safely, which makes it a good target for a symlink attack.

    This has been fixed in version 0.6a.nr-4slink1. We recommend you upgrade your apcd package immediately.

    Fixed in:
    source:
    https://security.debian.org/dists/stable/updates/source/apcd_0.6a.nr-4slink1.diff.gz
    https://security.debian.org/dists/stable/updates/source/apcd_0.6a.nr-4slink1.dsc
    https://security.debian.org/dists/stable/updates/source/apcd_0.6a.nr.orig.tar.gz
    alpha:
    https://security.debian.org/dists/stable/updates/binary-alpha/apcd_0.6a.nr-4slink1_alpha.deb
    i386:
    https://security.debian.org/dists/stable/updates/binary-i386/apcd_0.6a.nr-4slink1_i386.deb
    m68k:
    https://security.debian.org/dists/stable/updates/binary-m68k/apcd_0.6a.nr-4slink1_m68k.deb
    sparc:
    https://security.debian.org/dists/stable/updates/binary-sparc/apcd_0.6a.nr-4slink1_sparc.deb

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