Uočeno je nekoliko sigurnosnih nedostataka u programskom paketu Apache HTTP Server koje zlonamjerni korisnici mogu iskoristiti za izvođenje DoS (eng. Denial of Service) napada, povećanje ovlasti i otkrivanje informacija.
Paket:
HTTPD 2.x
Operacijski sustavi:
Slackware Linux 12.0, Slackware Linux 12.1, Slackware Linux 12.2, Slackware Linux 13.0, Slackware Linux 13.1, Slackware Linux 13.37
Neki od nedostataka uzrokovani se cjelobrojnim prepisivanjem u funkciji "ap_pregsub()", načinom obrade nepravilnih kolačića (eng. cookies) i načinom na koji se oblikuju poruke greške.
Posljedica:
Lokalni napadači mogu iskoristiti cjelobrojno prepisivanje za povećanje svojih ovlasti pomoću datoteke .htaccess, dok nedostatke s kolačićima i porukama greške mogu iskoristiti udaljeni napadači kako bi izveli DoS napad ili otkrili informacije iz poruka greške.
Rješenje:
Informacije o ostalim nedostacima dostupne su u izvornoj preporuci. Korisnicima se savjetuje korištenje dostupne nadogradnje.
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[slackware-security] httpd (SSA:2012-041-01)
New httpd packages are available for Slackware 12.0, 12.1, 12.2, 13.0, 13.1,
13.37, and -current to fix security issues. The apr-util package has also been
updated to the latest version.
Here are the details from the Slackware 13.37 ChangeLog:
+--------------------------+
patches/packages/apr-util-1.4.1-i486-1_slack13.37.txz: Upgraded.
Version bump for httpd upgrade.
patches/packages/httpd-2.2.22-i486-1_slack13.37.txz: Upgraded.
*) SECURITY: CVE-2011-3368 (cve.mitre.org)
Reject requests where the request-URI does not match the HTTP
specification, preventing unexpected expansion of target URLs in
some reverse proxy configurations. [Joe Orton]
*) SECURITY: CVE-2011-3607 (cve.mitre.org)
Fix integer overflow in ap_pregsub() which, when the mod_setenvif module
is enabled, could allow local users to gain privileges via a .htaccess
file. [Stefan Fritsch, Greg Ames]
*) SECURITY: CVE-2011-4317 (cve.mitre.org)
Resolve additional cases of URL rewriting with ProxyPassMatch or
RewriteRule, where particular request-URIs could result in undesired
backend network exposure in some configurations.
[Joe Orton]
*) SECURITY: CVE-2012-0021 (cve.mitre.org)
mod_log_config: Fix segfault (crash) when the '%{cookiename}C' log format
string is in use and a client sends a nameless, valueless cookie, causing
a denial of service. The issue existed since version 2.2.17. PR 52256.
[Rainer Canavan <rainer-apache 7val com>]
*) SECURITY: CVE-2012-0031 (cve.mitre.org)
Fix scoreboard issue which could allow an unprivileged child process
could cause the parent to crash at shutdown rather than terminate
cleanly. [Joe Orton]
*) SECURITY: CVE-2012-0053 (cve.mitre.org)
Fix an issue in error responses that could expose "httpOnly" cookies
when no custom ErrorDocument is specified for status code 400.
[Eric Covener]
For more information, see:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3368
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3607
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4317
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0021
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0031
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0053
(* 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 packages for Slackware 12.0:
ftp://ftp.slackware.com/pub/slackware/slackware-12.0/patches/packages/apr-util-1.4.1-i486-1_slack12.0.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-12.0/patches/packages/httpd-2.2.22-i486-1_slack12.0.tgz
Updated packages for Slackware 12.1:
ftp://ftp.slackware.com/pub/slackware/slackware-12.1/patches/packages/apr-util-1.4.1-i486-1_slack12.1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-12.1/patches/packages/httpd-2.2.22-i486-1_slack12.1.tgz
Updated packages for Slackware 12.2:
ftp://ftp.slackware.com/pub/slackware/slackware-12.2/patches/packages/apr-util-1.4.1-i486-1_slack12.2.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-12.2/patches/packages/httpd-2.2.22-i486-1_slack12.2.tgz
Updated packages for Slackware 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/apr-util-1.4.1-i486-1_slack13.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/httpd-2.2.22-i486-1_slack13.0.txz
Updated packages for Slackware x86_64 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/apr-util-1.4.1-x86_64-1_slack13.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/httpd-2.2.22-x86_64-1_slack13.0.txz
Updated packages for Slackware 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/apr-util-1.4.1-i486-1_slack13.1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/httpd-2.2.22-i486-1_slack13.1.txz
Updated packages for Slackware x86_64 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/apr-util-1.4.1-x86_64-1_slack13.1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/httpd-2.2.22-x86_64-1_slack13.1.txz
Updated packages for Slackware 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/apr-util-1.4.1-i486-1_slack13.37.txz
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/httpd-2.2.22-i486-1_slack13.37.txz
Updated packages for Slackware x86_64 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/apr-util-1.4.1-x86_64-1_slack13.37.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/httpd-2.2.22-x86_64-1_slack13.37.txz
Updated packages for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/apr-util-1.4.1-i486-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/httpd-2.2.22-i486-1.txz
Updated packages for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/apr-util-1.4.1-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/httpd-2.2.22-x86_64-1.txz
MD5 signatures:
+-------------+
Slackware 12.0 packages:
3143affee7e89d16a2f5b4f58f1f2c9d apr-util-1.4.1-i486-1_slack12.0.tgz
86c2b71a544c9533794951f718bd907b httpd-2.2.22-i486-1_slack12.0.tgz
Slackware 12.1 packages:
aab31157fa672bb2bc11851b486c9d5c apr-util-1.4.1-i486-1_slack12.1.tgz
1362ef9a9b2d355e1cf9b5c7e0ae0607 httpd-2.2.22-i486-1_slack12.1.tgz
Slackware 12.2 packages:
f30f1f0a949f321b6aefb99a703eca3f apr-util-1.4.1-i486-1_slack12.2.tgz
18fd6ddd6e6bbf4a7222ade821ec1aa1 httpd-2.2.22-i486-1_slack12.2.tgz
Slackware 13.0 packages:
d3600fef7f1cabb62554417567fb55ab apr-util-1.4.1-i486-1_slack13.0.txz
0456c808efb92da333942ff939746d77 httpd-2.2.22-i486-1_slack13.0.txz
Slackware x86_64 13.0 packages:
d15c2e0a4aa074bbadfa50099da482b2 apr-util-1.4.1-x86_64-1_slack13.0.txz
1b72685b2519bbf167973d88dce562e1 httpd-2.2.22-x86_64-1_slack13.0.txz
Slackware 13.1 packages:
9c7c2bb99c99f3a6275f0dc9636ce38c apr-util-1.4.1-i486-1_slack13.1.txz
49a5e4a73be2328d80cca186efe2f6f7 httpd-2.2.22-i486-1_slack13.1.txz
Slackware x86_64 13.1 packages:
4f9dcb6495c04d3094cc68050440505b apr-util-1.4.1-x86_64-1_slack13.1.txz
1f378f8a4d990d7298e0155b22cfcf19 httpd-2.2.22-x86_64-1_slack13.1.txz
Slackware 13.37 packages:
7feb382700511d72737c5a31e91ee56e apr-util-1.4.1-i486-1_slack13.37.txz
783de593b5827c8601e2b486cf98397f httpd-2.2.22-i486-1_slack13.37.txz
Slackware x86_64 13.37 packages:
1bd4b3df67a0449f3015e82e47cd808d apr-util-1.4.1-x86_64-1_slack13.37.txz
8999903e736cbb29c055ea2bf66cfed1 httpd-2.2.22-x86_64-1_slack13.37.txz
Slackware -current packages:
e709c8056cede91c35fd354ad5b654df l/apr-util-1.4.1-i486-1.txz
97c295a42d4678537c62d6ce54d3e1fa n/httpd-2.2.22-i486-1.txz
Slackware x86_64 -current packages:
55fdf36b05ff7e82aa9a015289290424 l/apr-util-1.4.1-x86_64-1.txz
09daa138b81fbf877596e4abc2a01bb6 n/httpd-2.2.22-x86_64-1.txz
Installation instructions:
+------------------------+
Upgrade the packages as root:
# upgradepkg apr-util-1.4.1-i486-1_slack13.37.txz
httpd-2.2.22-i486-1_slack13.37.txz
Then, restart the httpd daemon.
+-----+
Slackware Linux Security Team
http://slackware.com/gpg-key
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