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CVE-2012-2337

Status Candidate

Overview

sudo 1.6.x and 1.7.x before 1.7.9p1, and 1.8.x before 1.8.4p5, does not properly support configurations that use a netmask syntax, which allows local users to bypass intended command restrictions in opportunistic circumstances by executing a command on a host that has an IPv4 address.

Related Files

Mandriva Linux Security Advisory 2013-054
Posted Apr 7, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-054 - A flaw exists in the IP network matching code in sudo versions 1.6.9p3 through 1.8.4p4 that may result in the local host being matched even though it is not actually part of the network described by the IP address and associated netmask listed in the sudoers file or in LDAP. As a result, users authorized to run commands on certain IP networks may be able to run commands on hosts that belong to other networks not explicitly listed in sudoers. sudo 1.6.0 through 1.7.10p6 and sudo 1.8.0 through 1.8.6p6 allows local users or physically-proximate attackers to bypass intended time restrictions and retain privileges without re-authenticating by setting the system clock and sudo user timestamp to the epoch. Sudo before 1.8.6p7 allows a malicious user to run commands via sudo without authenticating, so long as there exists a terminal the user has access to where a sudo command was successfully run by that same user within the password timeout period. The updated packages have been patched to correct these issues.

tags | advisory, local
systems | linux, mandriva
advisories | CVE-2012-2337, CVE-2013-1775, CVE-2013-1776
SHA-256 | 1c65aaaffdb72581984d2276efcf089189ca0ea9517d048d794210853c4a68ca
Red Hat Security Advisory 2012-1081-01
Posted Jul 16, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1081-01 - The sudo utility allows system administrators to give certain users the ability to run commands as root. A flaw was found in the way the network matching code in sudo handled multiple IP networks listed in user specification configuration directives. A user, who is authorized to run commands with sudo on specific hosts, could use this flaw to bypass intended restrictions and run those commands on hosts not matched by any of the network specifications. All users of sudo are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

tags | advisory, root
systems | linux, redhat
advisories | CVE-2012-2337
SHA-256 | 2dfbfa43bde13f32ff7b638eeb910225f286b002c9fd10e5b654f6375bb16e10
Gentoo Linux Security Advisory 201207-01
Posted Jul 10, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201207-1 - A vulnerability has been found in sudo which may allow local users to gain escalated privileges. Versions less than 1.8.5_p1 are affected.

tags | advisory, local
systems | linux, gentoo
advisories | CVE-2012-2337
SHA-256 | 68d3a1284139070f600b38347b5b97957f28145e7f8f5ca73e1945edb8e00ccf
Debian Security Advisory 2478-1
Posted May 24, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2478-1 - It was discovered that sudo misparsed network masks used in Host and Host_List stanzas. This allowed the execution of commands on hosts, where the user would not be allowed to run the specified command.

tags | advisory
systems | linux, debian
advisories | CVE-2012-2337
SHA-256 | fa49469a07a4c2e333f036a694c17b0a83d1f089b43d38e1c25cb2dfb19e3c66
Mandriva Linux Security Advisory 2012-079
Posted May 22, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-079 - A flaw exists in the IP network matching code in sudo versions 1.6.9p3 through 1.8.4p4 that may result in the local host being matched even though it is not actually part of the network described by the IP address and associated netmask listed in the sudoers file or in LDAP. As a result, users authorized to run commands on certain IP networks may be able to run commands on hosts that belong to other networks not explicitly listed in sudoers. The updated packages have been patched to correct this issue.

tags | advisory, local
systems | linux, mandriva
advisories | CVE-2012-2337
SHA-256 | aa97ab426de40e17d32a9ab4b7f3c51d0d0f09c2b398834825656f46d2a75c7f
Ubuntu Security Notice USN-1442-1
Posted May 16, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1442-1 - It was discovered that sudo incorrectly handled network masks when using Host and Host_List. A local user who is listed in sudoers may be allowed to run commands on unintended hosts when IPv4 network masks are used to grant access. A local attacker could exploit this to bypass intended access restrictions. Host and Host_List are not used in the default installation of Ubuntu.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2012-2337
SHA-256 | 4324b59d64b342a521a0980f0e685008be9a14f33f0173e24e06a2608c59a814
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