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[ GLSA 200709-01 ] MIT Kerberos 5: Multiple vulnerabilities
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GLSA
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PostPosted: Wed Sep 12, 2007 7:26 pm    Post subject: [ GLSA 200709-01 ] MIT Kerberos 5: Multiple vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: MIT Kerberos 5: Multiple vulnerabilities (GLSA 200709-01)
Severity: high
Exploitable: remote
Date: September 11, 2007
Bug(s): #191301
ID: 200709-01

Synopsis


Two vulnerabilities have been found in MIT Kerberos 5, which could allow a
remote unauthenticated user to execute arbitrary code with root privileges.


Background


MIT Kerberos 5 is a suite of applications that implement the Kerberos
network protocol. kadmind is the MIT Kerberos 5 administration daemon.


Affected Packages

Package: app-crypt/mit-krb5
Vulnerable: < 1.5.3-r1
Unaffected: >= 1.5.3-r1
Architectures: All supported architectures


Description


A stack buffer overflow (CVE-2007-3999) has been reported in
svcauth_gss_validate() of the RPC library of kadmind. Another
vulnerability (CVE-2007-4000) has been found in
kadm5_modify_policy_internal(), which does not check the return values
of krb5_db_get_policy() correctly.


Impact


The RPC related vulnerability can be exploited by a remote
unauthenticated attacker to execute arbitrary code with root privileges
on the host running kadmind. The second vulnerability requires the
remote attacker to be authenticated and to have "modify policy"
privileges. It could then also allow for the remote execution of
arbitrary code.


Workaround


There is no known workaround at this time.


Resolution


All MIT Kerberos 5 users should upgrade to the latest version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.5.3-r1"


References

CVE-2007-3999
CVE-2007-4000


Last edited by GLSA on Fri Jun 22, 2012 4:24 am; edited 1 time in total
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