Objavljena je nova inačica programskog paketa dhcp koja ispravlja nekoliko sigurnosnih propusta koje su zlonamjerni napadači mogli iskoristiti za DoS napad.
Paket:
dhcp 4.x
Operacijski sustavi:
Slackware Linux 12.1, Slackware Linux 12.2, Slackware Linux 13.0, Slackware Linux 13.1, Slackware Linux 13.37
Kritičnost:
6.1
Problem:
neodgovarajuće rukovanje memorijom, pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-4539, CVE-2011-4868, CVE-2012-3954
Izvorni ID preporuke:
SSA:2012-237-01
Izvor:
Slackware
Problem:
U programskoj komponenti "dhcpd" uočeno je više grešaka, a također su primijećene ranjivosti povezane s neodgovarajućim rukovanjem memorijom.
Posljedica:
Opisane nedostatke udaljeni napadač može iskoristiti za napad uskraćivanjem usluga (eng. Denial of Service, DoS).
Rješenje:
Kao rješenje problema sigurnosti korisnicima se savjetuje primjena dostupnih nadogradnji.
[slackware-security] dhcp (SSA:2012-237-01)
Date: Fri, 24 Aug 2012 15:54:35 -0700 (PDT)
[slackware-security] dhcp (SSA:2012-237-01)
New dhcp packages are available for Slackware 12.1, 12.2, 13.0, 13.1, 13.37,
and -current to fix security issues.
Here are the details from the Slackware 13.37 ChangeLog:
+--------------------------+
patches/packages/dhcp-4.2.4_P1-i486-1_slack13.37.txz: Upgraded.
This fixes memory leaks, denial of service vulnerabilities, and
disallows packets with zero length client ids (not valid according to
RFC 2132 section 9.14).
For more information, see:
https://kb.isc.org/article/AA-00736
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4539
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4868
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3954
(* 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 12.1:
ftp://ftp.slackware.com/pub/slackware/slackware-12.1/patches/packages/dhcp-4.1_ESV_R6-i486-1_slack12.1.tgz
Updated package for Slackware 12.2:
ftp://ftp.slackware.com/pub/slackware/slackware-12.2/patches/packages/dhcp-4.1_ESV_R6-i486-1_slack12.2.tgz
Updated package for Slackware 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/dhcp-4.1_ESV_R6-i486-1_slack13.0.txz
Updated package for Slackware x86_64 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/dhcp-4.1_ESV_R6-x86_64-1_slack13.0.txz
Updated package for Slackware 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/dhcp-4.1_ESV_R6-i486-1_slack13.1.txz
Updated package for Slackware x86_64 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/dhcp-4.1_ESV_R6-x86_64-1_slack13.1.txz
Updated package for Slackware 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/dhcp-4.2.4_P1-i486-1_slack13.37.txz
Updated package for Slackware x86_64 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/dhcp-4.2.4_P1-x86_64-1_slack13.37.txz
Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/dhcp-4.2.4_P1-i486-1.txz
Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/dhcp-4.2.4_P1-x86_64-1.txz
MD5 signatures:
+-------------+
Slackware 12.1 package:
dbea8c7d1af7791576bc3c31f5f9a79a dhcp-4.1_ESV_R6-i486-1_slack12.1.tgz
Slackware 12.2 package:
acabeef1d2a4e96500f6dbc87420055e dhcp-4.1_ESV_R6-i486-1_slack12.2.tgz
Slackware 13.0 package:
777a165ed77730242eb713db68e70b2a dhcp-4.1_ESV_R6-i486-1_slack13.0.txz
Slackware x86_64 13.0 package:
d77b59a81e241f0b2431e49de3fbbe66 dhcp-4.1_ESV_R6-x86_64-1_slack13.0.txz
Slackware 13.1 package:
9f29c3441b2cd8b1f10176aff325a6f2 dhcp-4.1_ESV_R6-i486-1_slack13.1.txz
Slackware x86_64 13.1 package:
5c9fa9aada8a5970d2d91d43ea62533d dhcp-4.1_ESV_R6-x86_64-1_slack13.1.txz
Slackware 13.37 package:
5541c65c7dec1309ee5f9033d4137585 dhcp-4.2.4_P1-i486-1_slack13.37.txz
Slackware x86_64 13.37 package:
47642809170421181423985e94804699 dhcp-4.2.4_P1-x86_64-1_slack13.37.txz
Slackware -current package:
58e253889a9d1d9189932dad4c3899ba n/dhcp-4.2.4_P1-i486-1.txz
Slackware x86_64 -current package:
92f8774dfb3809891055debbfafbd3c1 n/dhcp-4.2.4_P1-x86_64-1.txz
Installation instructions:
+------------------------+
Upgrade the package as root:
# upgradepkg dhcp-4.2.4_P1-i486-1_slack13.37.txz
Then, restart the dhcp daemon.
+-----+
Slackware Linux Security Team
http://slackware.com/gpg-key
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