Otkrivena su tri sigurnosna propusta u programskom paketu pam kojeg zlonamjerni korisnici mogu iskoristiti za izvođenje DoS napada i pregled proizvoljnih datoteka.
Paket:
pam 1.x
Operacijski sustavi:
SUSE Linux Enterprise Desktop 11, SUSE Linux Enterprise Server (SLES) 11
Kritičnost:
3.2
Problem:
pogreška u programskoj funkciji, preljev međuspremnika
Propusti paketa pam nastaju u modulu pam_envte u funkciji "run_coprocess" u datoteci "pam_xauth.c" koja ne provjerava povratne vrijednosti setuid, setgid i setgroups sistemskih poziva.
Posljedica:
Udaljeni napadac može iskoristiti spomenute nedostatke za izvođenje napada uskraćivanja usluge ili pregled proizvoljnih datoteka.
SUSE Security Update: Security update for pam
______________________________________________________________________________
Announcement ID: SUSE-SU-2011:1207-1
Rating: important
References: #631802 #724480 #726071
Cross-References: CVE-2010-3316 CVE-2011-3148 CVE-2011-3149
Affected Products:
SUSE Linux Enterprise Software Development Kit 11 SP1
SUSE Linux Enterprise Server 11 SP1 for VMware
SUSE Linux Enterprise Server 11 SP1
SUSE Linux Enterprise Desktop 11 SP1
______________________________________________________________________________
An update that fixes three vulnerabilities is now available.
Description:
The pam_env module is vulnerable to a stack overflow
(CVE-2011-3148) and a DoS condition (CVE-2011-3149) when
parsing users .pam_environment files. Additionally a
missing return value check inside pam_xauth has been fixed
(CVE-2010-3316).
Security Issue references:
* CVE-2011-3148
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3148
>
* CVE-2011-3149
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3149
>
* CVE-2010-3316
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3316
>
Patch Instructions:
To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Software Development Kit 11 SP1:
zypper in -t patch sdksp1-pam-5342
- SUSE Linux Enterprise Server 11 SP1 for VMware:
zypper in -t patch slessp1-pam-5342
- SUSE Linux Enterprise Server 11 SP1:
zypper in -t patch slessp1-pam-5342
- SUSE Linux Enterprise Desktop 11 SP1:
zypper in -t patch sledsp1-pam-5342
To bring your system up-to-date, use "zypper patch".
Package List:
- SUSE Linux Enterprise Software Development Kit 11 SP1 (i586 ia64 ppc64
s390x x86_64):
pam-devel-1.0.4-0.7.1
- SUSE Linux Enterprise Software Development Kit 11 SP1 (ppc64 s390x
x86_64):
pam-devel-32bit-1.0.4-0.7.1
- SUSE Linux Enterprise Server 11 SP1 for VMware (i586 x86_64):
pam-1.0.4-0.7.1
pam-doc-1.0.4-0.7.1
- SUSE Linux Enterprise Server 11 SP1 for VMware (x86_64):
pam-32bit-1.0.4-0.7.1
- SUSE Linux Enterprise Server 11 SP1 (i586 ia64 ppc64 s390x x86_64):
pam-1.0.4-0.7.1
pam-doc-1.0.4-0.7.1
- SUSE Linux Enterprise Server 11 SP1 (ppc64 s390x x86_64):
pam-32bit-1.0.4-0.7.1
- SUSE Linux Enterprise Server 11 SP1 (ia64):
pam-x86-1.0.4-0.7.1
- SUSE Linux Enterprise Desktop 11 SP1 (i586 x86_64):
pam-1.0.4-0.7.1
pam-doc-1.0.4-0.7.1
- SUSE Linux Enterprise Desktop 11 SP1 (x86_64):
pam-32bit-1.0.4-0.7.1
References:
http://support.novell.com/security/cve/CVE-2010-3316.html
http://support.novell.com/security/cve/CVE-2011-3148.html
http://support.novell.com/security/cve/CVE-2011-3149.html
https://bugzilla.novell.com/631802
https://bugzilla.novell.com/724480
https://bugzilla.novell.com/726071
http://download.novell.com/patch/finder/?keywords=fd9b46439ba47c737129f58734f894dc
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