Bug 490752 - SELinux hindert scangearmp am Laden von /usr/lib/libcncpmslld328.so.1.1.0, welches Textverschiebung benötigt.
SELinux hindert scangearmp am Laden von /usr/lib/libcncpmslld328.so.1.1.0, we...
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
x86_64 Linux
low Severity urgent
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Assigned To: Miroslav Grepl
Fedora Extras Quality Assurance
Depends On:
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Reported: 2009-03-17 15:59 EDT by Simon Lewis
Modified: 2009-11-18 08:00 EST (History)
5 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2009-11-18 08:00:26 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Simon Lewis 2009-03-17 15:59:26 EDT

SELinux hindert scangearmp am Laden von /usr/lib/libcncpmslld328.so.1.1.0,
welches Textverschiebung benötigt.

Detaillierte Beschreibung:

Die Anwendung scangearmp versuchte /usr/lib/libcncpmslld328.so.1.1.0 zu laden,
welches Textverschiebung benötigt. Dies ist ein mögliches Sicherheitsproblem.
Die meisten Bibliotheken benötigen diese Erlaubnis nicht, einige sind ggf.
fehlerhaft programmiert und fordern diese Erlaubnis an. Die Webseite SELinux
Memory Protection Tests (http://people.redhat.com/drepper/selinux-mem.html)
erklärt, wie diese Anforderung entfernt werden kann. Als Workaround können Sie
SELinux temporär so konfigurieren, dass /usr/lib/libcncpmslld328.so.1.1.0
Textverschiebung verwendet, bis die Bibliothek gefixt ist. Bitte reichen Sie
einen Fehlerbericht (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) für
dieses Paket ein.

Zugriff erlauben:

Wenn Sie darauf vertrauen, dass /usr/lib/libcncpmslld328.so.1.1.0 korrekt
läuft, können Sie den Dateikontext in textrel_shlib_t. "chcon -t
textrel_shlib_t /usr/lib/libcncpmslld328.so.1.1.0" ändern Sie müssen auch die
Standarddatei mit dem Dateikontext ändern auf dem System, um bei einer
komplette Neubezeichnung vorzubeugen. "semanage fcontext -a -t textrel_shlib_t

Fixer Befehl:

chcon -t textrel_shlib_t '/usr/lib/libcncpmslld328.so.1.1.0'

Zusätzliche Informationen:

Quellkontext                  unconfined_u:unconfined_r:unconfined_t:s0
Zielkontext                   system_u:object_r:lib_t:s0
Zielobjekte                   /usr/lib/libcncpmslld328.so.1.1.0 [ file ]
Quelle                        scangearmp
Quellen-Pfad                  /usr/local/bin/scangearmp
Port                          <Unbekannt>
Host                          hp550-01
Quellen-RPM-Pakete            scangearmp-common-1.10-1
Ziel-RPM-Pakete               scangearmp-mp520series-1.10-1
RPM-Richtlinie                selinux-policy-3.5.13-47.fc10
SELinux aktiviert             True
Richtlinienversion            targeted
MLS aktiviert                 True
Enforcing-Modus               Enforcing
Plugin-Name                   allow_execmod
Hostname                      hp550-01
Plattform                     Linux hp550-01 #1
                              SMP Mon Feb 23 13:00:23 EST 2009 x86_64 x86_64
Anzahl der Alarme             1
Zuerst gesehen                Mo 16 Mär 2009 17:51:17 CET
Zuletzt gesehen               Mo 16 Mär 2009 17:51:17 CET
Lokale ID                     ef8034cc-f717-47c5-b009-b3b71e8638c6


node=hp550-01 type=AVC msg=audit(1237222277.531:15): avc:  denied  { execmod } for  pid=2612 comm="scangearmp" path="/usr/lib/libcncpmslld328.so.1.1.0" dev=sda6 ino=100368 scontext=unconfined_u:unconfined_r:unconfined_t:s0 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=hp550-01 type=SYSCALL msg=audit(1237222277.531:15): arch=40000003 syscall=125 success=no exit=-13 a0=3b5000 a1=1d000 a2=5 a3=ff9274b0 items=0 ppid=2426 pid=2612 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="scangearmp" exe="/usr/local/bin/scangearmp" subj=unconfined_u:unconfined_r:unconfined_t:s0 key=(null)
Comment 1 Daniel Walsh 2009-03-18 09:25:53 EDT
Miroslav add the following to policy

/usr/lib/libcncpmslld328\.so(\.[^/]*)*	gen_context(system_u:object_r:textrel_shlib_t,s0)

Simon, the problem here is Cannon has built their library incorrectly and SELinux is flagging it as a potential problem/hack.

Please report this bug to cannon and include this link.


You can allow this for now by executing the chcon command in the setroubleshoot message.
Comment 2 Miroslav Grepl 2009-03-20 11:40:59 EDT
Fixed in  selinux-policy-3.5.13-50.fc10
Comment 3 Noura El hawary 2009-11-18 07:58:14 EST
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Comment 4 Daniel Walsh 2009-11-18 08:00:26 EST
Closing as current release

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