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[ GLSA 201003-01 ] sudo: Privilege escalation
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PostPosted: Wed Mar 03, 2010 5:26 pm    Post subject: [ GLSA 201003-01 ] sudo: Privilege escalation Reply with quote

Gentoo Linux Security Advisory

Title: sudo: Privilege escalation (GLSA 201003-01)
Severity: high
Exploitable: local
Date: March 03, 2010
Bug(s): #306865
ID: 201003-01

Synopsis


Two vulnerabilities in sudo might allow local users to escalate privileges
and execute arbitrary code with root privileges.


Background


sudo allows a system administrator to give users the ability to run
commands as other users.


Affected Packages

Package: app-admin/sudo
Vulnerable: < 1.7.2_p4
Unaffected: >= 1.7.2_p4
Architectures: All supported architectures


Description


Multiple vulnerabilities have been discovered in sudo:
  • Glenn Waller and neonsignal reported that sudo does not properly
    handle access control of the "sudoedit" pseudo-command
    (CVE-2010-0426).
  • Harald Koenig reported that sudo does not
    properly set supplementary groups when using the "runas_default" option
    (CVE-2010-0427).


Impact


A local attacker with privileges to use "sudoedit" or the privilege to
execute commands with the "runas_default" setting enabled could
leverage these vulnerabilities to execute arbitrary code with elevated
privileges.


Workaround


CVE-2010-0426: Revoke all "sudoedit" privileges, or use the full path
to sudoedit. CVE-2010-0427: Remove all occurrences of the
"runas_default" setting.


Resolution


All sudo users should upgrade to the latest version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.7.2_p4"


References

CVE-2010-0426
CVE-2010-0427
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