Pri radu programskog paketa dhcpcd otkriven je sigurnosni propust koji udaljenim napadačima omogućuje izvršavanje proizvoljnih naredbi.
Paket:
Operacijski sustavi:
Slackware Linux 13.0, Slackware Linux 13.1, Slackware Linux 13.37
Kritičnost:
6.8
Problem:
neodgovarajuća provjera ulaznih podataka
Iskorištavanje:
udaljeno
Posljedica:
pokretanje proizvoljnih naredbi
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-0996
Izvorni ID preporuke:
SSA:2011-210-02
Izvor:
Slackware
Problem:
Uočena ranjivost posljedica je neodgovarajuće provjere primljene DHCP (eng. Dynamic Host Configuration Protocol) poruke zbog koje je moguće u polje "hostname" umetnuti metaznakove "shell" ljuske.
Posljedica:
Uspješno iskorištavanje sigurnosnog nedostatka udaljenom napadaču omogućuje izvršavanje proizvoljnih naredbi.
Rješenje:
Svim korisnicima preporučuje se nadogradnja na najnoviju inačicu paketa.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
[slackware-security] dhcpcd (SSA:2011-210-02)
New dhcpcd packages are available for Slackware 13.0, 13.1, 13.37,
and -current to fix security issues.
Here are the details from the Slackware 13.37 ChangeLog:
+--------------------------+
patches/packages/dhcpcd-5.2.12-i486-1_slack13.37.txz: Upgraded.
Sanitize the host name provided by the DHCP server to insure that it does
not contain any shell metacharacters.
For more information, see:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0996
(* Security fix *)
+--------------------------+
Where to find the new packages:
+-----------------------------+
Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project! :-)
Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.
Updated package for Slackware 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/dhcpcd-3.2.3-i486-2_slack13.0.txz
Updated package for Slackware x86_64 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/dhcpcd-3.2.3-x86_64-2_slack13.0.txz
Updated package for Slackware 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/dhcpcd-5.2.12-i486-1_slack13.1.txz
Updated package for Slackware x86_64 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/dhcpcd-5.2.12-x86_64-1_slack13.1.txz
Updated package for Slackware 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/dhcpcd-5.2.12-i486-1_slack13.37.txz
Updated package for Slackware x86_64 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/dhcpcd-5.2.12-x86_64-1_slack13.37.txz
Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/dhcpcd-5.2.12-i486-1.txz
Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/dhcpcd-5.2.12-x86_64-1.txz
MD5 signatures:
+-------------+
Slackware 13.0 package:
1029af8f686830f358e053ca2406b9a6 dhcpcd-3.2.3-i486-2_slack13.0.txz
Slackware x86_64 13.0 package:
5615c7feb96339495bf628ea248a6b76 dhcpcd-3.2.3-x86_64-2_slack13.0.txz
Slackware 13.1 package:
23211c76d60f18f568a44f76c6cbc2dc dhcpcd-5.2.12-i486-1_slack13.1.txz
Slackware x86_64 13.1 package:
2b186bb623ee30926e54e11c5017ec14 dhcpcd-5.2.12-x86_64-1_slack13.1.txz
Slackware 13.37 package:
9b669fe2c0f4cd3267aad81a28e8302c dhcpcd-5.2.12-i486-1_slack13.37.txz
Slackware x86_64 13.37 package:
77564e0ba2daaa5066acd44cd33e8f40 dhcpcd-5.2.12-x86_64-1_slack13.37.txz
Slackware -current package:
8700b8a222d2cbc3564cd9d25b551ac1 dhcpcd-5.2.12-i486-1.txz
Slackware x86_64 -current package:
1d96860005547b5edfc55a4d79fb44cd dhcpcd-5.2.12-x86_64-1.txz
Installation instructions:
+------------------------+
Upgrade the package as root:
# upgradepkg dhcpcd-5.2.12-i486-1_slack13.37.txz
+-----+
Slackware Linux Security Team
http://slackware.com/gpg-key
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