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The remote Red Hat host is missing one or more security updates.
The Canna server, used for Japanese character input, has two security
vulnerabilities including an exploitable buffer overflow that allows a
local user to gain 'bin' user privileges. Updated packages for Red Hat
Linux Advanced Server are available.
[Updated 13 Jan 2003] Added fixed packages for the Itanium (IA64)
[Updated 06 Feb 2003] Added fixed packages for Advanced Workstation
Canna is a kana-kanji conversion server which is necessary for
Japanese language character input.
A buffer overflow bug in the Canna server up to and including version
3.5b2 allows a local user to gain the privileges of the user 'bin'
which can lead to further exploits. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CVE-2002-1158
to this issue.
In addition, it was discovered that request validation was lacking in
Canna server versions 3.6 and earlier. A malicious remote user could
exploit this vulnerability to leak information or cause a denial of
service attack. (CVE-2002-1159)
Red Hat Linux Advanced Server ships with a Canna package vulnerable to
however, the package is normally only installed when
Japanese language support is selected during installation.
All users of Canna are advised to upgrade to these errata packages
which contain a backported security fix and are not vulnerable to this
Red Hat would like to thank hsj and AIDA Shinra for the responsible
disclosure of these issues.
See also :
Update the affected Canna, Canna-devel and / or Canna-libs packages.
Risk factor :
High / CVSS Base Score : 7.2
Family: Red Hat Local Security Checks
Nessus Plugin ID: 12336 ()
CVE ID: CVE-2002-1158CVE-2002-1159
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