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Revision:  371418
Date:      2014-10-24
Time:      01:58:13Z
Committer: zi

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VuXML IDDescription
b3435b68-9ee8-11e1-997c-002354ed89bcsudo -- netmask vulnerability

Todd Miller reports:

Sudo supports granting access to commands on a per-host basis. The host specification may be in the form of a host name, a netgroup, an IP address, or an IP network (an IP address with an associated netmask).

When IPv6 support was added to sudo, a bug was introduced that caused the IPv6 network matching code to be called when an IPv4 network address does not match. Depending on the value of the uninitialized portion of the IPv6 address, it is possible for the IPv4 network number to match when it should not. This bug only affects IP network matching and does not affect simple IP address matching.

The reported configuration that exhibited the bug was an LDAP-based sudo installation where the sudoRole object contained multiple sudoHost entries, each containing a different IPv4 network. File-based sudoers should be affected as well as the same matching code is used.


Discovery 2012-05-16
Entry 2012-05-16
sudo
le 1.8.4_1

CVE-2012-2337
http://www.sudo.ws/sudo/alerts/netmask.html
b3435b68-9ee8-11e1-997c-002354ed89bcsudo -- netmask vulnerability

Todd Miller reports:

Sudo supports granting access to commands on a per-host basis. The host specification may be in the form of a host name, a netgroup, an IP address, or an IP network (an IP address with an associated netmask).

When IPv6 support was added to sudo, a bug was introduced that caused the IPv6 network matching code to be called when an IPv4 network address does not match. Depending on the value of the uninitialized portion of the IPv6 address, it is possible for the IPv4 network number to match when it should not. This bug only affects IP network matching and does not affect simple IP address matching.

The reported configuration that exhibited the bug was an LDAP-based sudo installation where the sudoRole object contained multiple sudoHost entries, each containing a different IPv4 network. File-based sudoers should be affected as well as the same matching code is used.


Discovery 2012-05-16
Entry 2012-05-16
sudo
le 1.8.4_1

CVE-2012-2337
http://www.sudo.ws/sudo/alerts/netmask.html