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[CVE-2010-2956] Ubuntu (10.04 LTS; 10.10; 9.10) sudo privilege escalation

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Priority
======
[B]Medium[/B]

Description
=========
A security flaw was found in the way Sudo performed matching
for user described by a password against the list of members,
allowed to run particular sudo command, when the group option
was specified on the command line. If a local, unprivileged
user was authorized by sudoers file to run their sudo commands
with permissions of a particular group (different to their own),
it could lead to privilege escalation (execution of that sudo
command with permissions of privileged user account (root)).

References
=========
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2956
http://www.sudo.ws/sudo/alerts/runas_group.html
http://www.ubuntu.com/usn/usn-983-1


Notes
=====
jdstrand> root escalation, but requires non-standard sudoers setup
jdstrand> sudo 1.6 is not affected (does not have '-g' option)


Assigned-to
=========
jdstrand

Package
=======
Source: sudo (LP Ubuntu Debian)
---------------------------------------------------
Ubuntu 6.06 LTS (Dapper Drake): not-affected
Ubuntu 8.04 LTS (Hardy Heron): not-affected
Ubuntu 9.04 (Jaunty Jackalope): not-affected
Ubuntu 9.10 (Karmic Koala): released (1.7.0-1ubuntu2.5)
Ubuntu 10.04 LTS (Lucid Lynx): released (1.7.2p1-1ubuntu5.2)
Ubuntu 10.10 (Maverick Meerkat): released (1.7.2p7-1ubuntu2)

Faceti update.

Source: CVE-2010-2956 in Ubuntu

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ca sa nu mai deschid alt topic... eu ieri am updatat ubuntu 9.10 la 10.04 mergea fara probleme si am zis sa il updatez pe 10.04 la 10.10 si ca sa vezi ca prin minune nu alta... nu a mers... mergea in modul fara grafica... era doar terminalul pe tot ecranul... imi cerea sa ma loghez m-am loghat si nu am reusit sa aflu prea multe de ce mama lui nu mergea... cred ca o fi de la driverele placii video. Deci imi puteti spune cum sa fac sa updatez la 10.10 si sa mearga ? ;;) va rog :D sau sa astept pana apare stabil nu beta?

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ca sa nu mai deschid alt topic... eu ieri am updatat ubuntu 9.10 la 10.04 mergea fara probleme si am zis sa il updatez pe 10.04 la 10.10 si ca sa vezi ca prin minune nu alta... nu a mers... mergea in modul fara grafica... era doar terminalul pe tot ecranul... imi cerea sa ma loghez m-am loghat si nu am reusit sa aflu prea multe de ce mama lui nu mergea... cred ca o fi de la driverele placii video. Deci imi puteti spune cum sa fac sa updatez la 10.10 si sa mearga ? ;;) va rog :D sau sa astept pana apare stabil nu beta?

Am inteles tot, un debug nu dai si tu? Log? Este vreo problema cu "Xserver-org" (specifica ceva de el)? Socket error? Asta am patit si eu aseara dupa ce mi-am bagat nasul in tool-ul pentru "laptop lcd brightness" a trebuit sa scot xserver-ul si sa-l instalez la loc. Ma atentiona ca nu am instalat cum trebuie "Gnome" power manager (sau ceva de genul).

LE: Referitor la mai sus, la login dupa ce imi booteaza imi zice "The configuration defaults for GNOME Power Manager have not been installed correctly. Please contact your computer administrator.", este in mare parte din cauza la putin spatiu pe disc dedicat Ubuntu-ului (ceea ce este adevarat.. mai am cam ~100 mb ramasi liberi... lul).

Am gasit un fix aici (care nu l-am testat inca, dar altii au raportat ca le-a mers): http://www.absolutelytech.com/2010/04/13/solved-unable-to-boot-due-to-gnome-power-manager-error/

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