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Category:   Application (Generic)  >   Glibc Vendors:   [Multiple Authors/Vendors]
(Mandrake Issues Fix) GNU C Library (glibc) Contains Buffer Overflow in Glob() Function That May Be Exploitable By Other Programs
SecurityTracker Alert ID:  1003025
SecurityTracker URL:  http://securitytracker.com/id/1003025
CVE Reference:   CAN-2001-0886   (Links to External Site)
Date:  Dec 20 2001
Impact:   Execution of arbitrary code via local system, Execution of arbitrary code via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Red Hat reported a buffer overflow vulnerability in glibc's glob(3) implementation. Programs that use this globbing function on user-supplied input may be exploited to execute arbitrary code.

It is reported that the GNU standard C library <bug-glibc.gnu.org> contains a bug in the glob() function. If the function is passed a glob pattern ending with "{" and if GLOB_BRACE was used, the function may access unauthorized memory locations.

Red Hat indicates that Flavio Veloso <flaviovs@magnux.com> discovered this buffer overflow problem.

Impact:   If a program passes user-supplied input to this globbing function, that program may be exploitable. A user may be able to cause that program to execute arbitrary code with the privileges of the program.
Solution:   The vendor has released a fix:

Linux-Mandrake 7.1:
516acd7c51fee17ca9bb8a891075075c 7.1/RPMS/glibc-2.1.3-19.1mdk.i586.rpm
5ca14ef88a3d24f3fd9bcba49081ded8 7.1/RPMS/glibc-devel-2.1.3-19.1mdk.i586.rpm
fb24d6b2a254859bc909c36a38d9d139 7.1/RPMS/glibc-profile-2.1.3-19.1mdk.i586.rpm
29e2a828a36cfd258afa3d7e8bcb7f4d 7.1/RPMS/nscd-2.1.3-19.1mdk.i586.rpm
28033029837d789d934a419dfc1131b2 7.1/SRPMS/glibc-2.1.3-19.1mdk.src.rpm

Linux-Mandrake 7.2:
e19276709c2a4735ddee4a0951df4e12 7.2/RPMS/glibc-2.1.3-19.2mdk.i586.rpm
92a7e4cee85c42c4ea037df54148a596 7.2/RPMS/glibc-devel-2.1.3-19.2mdk.i586.rpm
3bd6c44c0ab01b82760c4d366f59d781 7.2/RPMS/glibc-profile-2.1.3-19.2mdk.i586.rpm
6972ae990d40b74ea6410a693fec4c7a 7.2/RPMS/nscd-2.1.3-19.2mdk.i586.rpm
3f842988e9aab5ceb3067ec0f9310e09 7.2/SRPMS/glibc-2.1.3-19.2mdk.src.rpm

Mandrake Linux 8.0:
19b2a99c2689b46bdab81adf0fb528be 8.0/RPMS/glibc-2.2.2-6.1mdk.i586.rpm
7f582c2277c07aca00299c17b82d448b 8.0/RPMS/glibc-devel-2.2.2-6.1mdk.i586.rpm
d280e87d1e835ece32b9cacdd2cd9ccd 8.0/RPMS/glibc-profile-2.2.2-6.1mdk.i586.rpm
3dae28acd265003186cda5863ff449c3 8.0/RPMS/ldconfig-2.2.2-6.1mdk.i586.rpm
ece1998a4e8099ebda6f2d03c88bddd8 8.0/RPMS/nscd-2.2.2-6.1mdk.i586.rpm
c324de9da3bcf41124036934d64a2f1c 8.0/SRPMS/glibc-2.2.2-6.1mdk.src.rpm

Mandrake Linux 8.0 (PPC):
ad856404147580c30bc044085d044681 ppc/8.0/RPMS/glibc-2.2.2-6.1mdk.ppc.rpm
94f2d80ac1770f789f7ccc154bb5ad58 ppc/8.0/RPMS/glibc-devel-2.2.2-6.1mdk.ppc.rpm
7e6c492400976eefa673e1fd81f2121c ppc/8.0/RPMS/glibc-profile-2.2.2-6.1mdk.ppc.rpm
ca8663cc2f2ce2a50a6401054a4a182c ppc/8.0/RPMS/ldconfig-2.2.2-6.1mdk.ppc.rpm
a07ea6eb40ac747ec4c3da16b7905a75 ppc/8.0/RPMS/nscd-2.2.2-6.1mdk.ppc.rpm
c324de9da3bcf41124036934d64a2f1c ppc/8.0/SRPMS/glibc-2.2.2-6.1mdk.src.rpm

Mandrake Linux 8.1:
2a991be2c3cf7fcf829b653127131719 8.1/RPMS/glibc-2.2.4-9.1mdk.i586.rpm
8742ff16fc01c8bcd89d95564b643e56 8.1/RPMS/glibc-devel-2.2.4-9.1mdk.i586.rpm
1ed7510e9496c6ec2778b2a8dc65206e 8.1/RPMS/glibc-profile-2.2.4-9.1mdk.i586.rpm
ff8053a5491048795b78fbe39ef732ae 8.1/RPMS/ldconfig-2.2.4-9.1mdk.i586.rpm
550a774cdccbcde645cb3ffb8cfa0c12 8.1/RPMS/nscd-2.2.4-9.1mdk.i586.rpm
02d799a94863352278b4fb07b7ff50ff 8.1/SRPMS/glibc-2.2.4-9.1mdk.src.rpm

Mandrake Linux 8.1 (IA64):
859380703ef56994ee7170aee273d7ae ia64/8.1/RPMS/glibc-2.2.4-9.1mdk.ia64.rpm
884fb217b7b4f1982fedb731b7fa9b79 ia64/8.1/RPMS/glibc-devel-2.2.4-9.1mdk.ia64.rpm
8fbfc935cde96781e2ea73167864c571 ia64/8.1/RPMS/glibc-profile-2.2.4-9.1mdk.ia64.rpm
63a40508fcbab4cce75436994a356184 ia64/8.1/RPMS/ldconfig-2.2.4-9.1mdk.ia64.rpm
174dee8685f5549aabb40d650ed32079 ia64/8.1/RPMS/nscd-2.2.4-9.1mdk.ia64.rpm
02d799a94863352278b4fb07b7ff50ff ia64/8.1/SRPMS/glibc-2.2.4-9.1mdk.src.rpm

Corporate Server 1.0.1:
516acd7c51fee17ca9bb8a891075075c 1.0.1/RPMS/glibc-2.1.3-19.1mdk.i586.rpm
5ca14ef88a3d24f3fd9bcba49081ded8 1.0.1/RPMS/glibc-devel-2.1.3-19.1mdk.i586.rpm
fb24d6b2a254859bc909c36a38d9d139 1.0.1/RPMS/glibc-profile-2.1.3-19.1mdk.i586.rpm
29e2a828a36cfd258afa3d7e8bcb7f4d 1.0.1/RPMS/nscd-2.1.3-19.1mdk.i586.rpm
28033029837d789d934a419dfc1131b2 1.0.1/SRPMS/glibc-2.1.3-19.1mdk.src.rpm

Single Network Firewall 7.2:
e19276709c2a4735ddee4a0951df4e12 snf7.2/RPMS/glibc-2.1.3-19.2mdk.i586.rpm
92a7e4cee85c42c4ea037df54148a596 snf7.2/RPMS/glibc-devel-2.1.3-19.2mdk.i586.rpm
3bd6c44c0ab01b82760c4d366f59d781 snf7.2/RPMS/glibc-profile-2.1.3-19.2mdk.i586.rpm
6972ae990d40b74ea6410a693fec4c7a snf7.2/RPMS/nscd-2.1.3-19.2mdk.i586.rpm
3f842988e9aab5ceb3067ec0f9310e09 snf7.2/SRPMS/glibc-2.1.3-19.2mdk.src.rpm

Cause:   Boundary error, Exception handling error
Underlying OS:   Linux (Mandriva/Mandrake)

Message History:   This archive entry is a follow-up to the message listed below.
Dec 14 2001 GNU C Library (glibc) Contains Buffer Overflow in Glob() Function That May Be Exploitable By Other Programs



 Source Message Contents

Date:  20 Dec 2001 05:56:11 -0000
Subject:  [Security Announce] MDKSA-2001:095 - glibc update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           glibc
Date:                   December 19th, 2001
Advisory ID:            MDKSA-2001:095

Affected versions:      7.1, 7.2, 8.0, 8.1, Corporate Server 1.0.1,
                        Single Network Firewall 7.2
________________________________________________________________________

Problem Description:

 Flavio Veloso found an overflowable buffer problem in earlier versions
 of the glibc glob(3) implementation.  It may be possible to exploit
 some programs that pass input to the glibc glob() function in a manner
 that can be modified by the user.
________________________________________________________________________

References:

  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-0886
________________________________________________________________________

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:

  rpm --checksig package.rpm

You can get the GPG public key of the Mandrake Linux Security Team at:

  https://www.mandrakesecure.net/RPM-GPG-KEYS

If you use MandrakeUpdate, the verification of md5 checksum and GPG
signature is performed automatically for you.

Linux-Mandrake 7.1:
516acd7c51fee17ca9bb8a891075075c  7.1/RPMS/glibc-2.1.3-19.1mdk.i586.rpm
5ca14ef88a3d24f3fd9bcba49081ded8  7.1/RPMS/glibc-devel-2.1.3-19.1mdk.i586.rpm
fb24d6b2a254859bc909c36a38d9d139  7.1/RPMS/glibc-profile-2.1.3-19.1mdk.i586.rpm
29e2a828a36cfd258afa3d7e8bcb7f4d  7.1/RPMS/nscd-2.1.3-19.1mdk.i586.rpm
28033029837d789d934a419dfc1131b2  7.1/SRPMS/glibc-2.1.3-19.1mdk.src.rpm

Linux-Mandrake 7.2:
e19276709c2a4735ddee4a0951df4e12  7.2/RPMS/glibc-2.1.3-19.2mdk.i586.rpm
92a7e4cee85c42c4ea037df54148a596  7.2/RPMS/glibc-devel-2.1.3-19.2mdk.i586.rpm
3bd6c44c0ab01b82760c4d366f59d781  7.2/RPMS/glibc-profile-2.1.3-19.2mdk.i586.rpm
6972ae990d40b74ea6410a693fec4c7a  7.2/RPMS/nscd-2.1.3-19.2mdk.i586.rpm
3f842988e9aab5ceb3067ec0f9310e09  7.2/SRPMS/glibc-2.1.3-19.2mdk.src.rpm

Mandrake Linux 8.0:
19b2a99c2689b46bdab81adf0fb528be  8.0/RPMS/glibc-2.2.2-6.1mdk.i586.rpm
7f582c2277c07aca00299c17b82d448b  8.0/RPMS/glibc-devel-2.2.2-6.1mdk.i586.rpm
d280e87d1e835ece32b9cacdd2cd9ccd  8.0/RPMS/glibc-profile-2.2.2-6.1mdk.i586.rpm
3dae28acd265003186cda5863ff449c3  8.0/RPMS/ldconfig-2.2.2-6.1mdk.i586.rpm
ece1998a4e8099ebda6f2d03c88bddd8  8.0/RPMS/nscd-2.2.2-6.1mdk.i586.rpm
c324de9da3bcf41124036934d64a2f1c  8.0/SRPMS/glibc-2.2.2-6.1mdk.src.rpm

Mandrake Linux 8.0 (PPC):
ad856404147580c30bc044085d044681  ppc/8.0/RPMS/glibc-2.2.2-6.1mdk.ppc.rpm
94f2d80ac1770f789f7ccc154bb5ad58  ppc/8.0/RPMS/glibc-devel-2.2.2-6.1mdk.ppc.rpm
7e6c492400976eefa673e1fd81f2121c  ppc/8.0/RPMS/glibc-profile-2.2.2-6.1mdk.ppc.rpm
ca8663cc2f2ce2a50a6401054a4a182c  ppc/8.0/RPMS/ldconfig-2.2.2-6.1mdk.ppc.rpm
a07ea6eb40ac747ec4c3da16b7905a75  ppc/8.0/RPMS/nscd-2.2.2-6.1mdk.ppc.rpm
c324de9da3bcf41124036934d64a2f1c  ppc/8.0/SRPMS/glibc-2.2.2-6.1mdk.src.rpm

Mandrake Linux 8.1:
2a991be2c3cf7fcf829b653127131719  8.1/RPMS/glibc-2.2.4-9.1mdk.i586.rpm
8742ff16fc01c8bcd89d95564b643e56  8.1/RPMS/glibc-devel-2.2.4-9.1mdk.i586.rpm
1ed7510e9496c6ec2778b2a8dc65206e  8.1/RPMS/glibc-profile-2.2.4-9.1mdk.i586.rpm
ff8053a5491048795b78fbe39ef732ae  8.1/RPMS/ldconfig-2.2.4-9.1mdk.i586.rpm
550a774cdccbcde645cb3ffb8cfa0c12  8.1/RPMS/nscd-2.2.4-9.1mdk.i586.rpm
02d799a94863352278b4fb07b7ff50ff  8.1/SRPMS/glibc-2.2.4-9.1mdk.src.rpm

Mandrake Linux 8.1 (IA64):
859380703ef56994ee7170aee273d7ae  ia64/8.1/RPMS/glibc-2.2.4-9.1mdk.ia64.rpm
884fb217b7b4f1982fedb731b7fa9b79  ia64/8.1/RPMS/glibc-devel-2.2.4-9.1mdk.ia64.rpm
8fbfc935cde96781e2ea73167864c571  ia64/8.1/RPMS/glibc-profile-2.2.4-9.1mdk.ia64.rpm
63a40508fcbab4cce75436994a356184  ia64/8.1/RPMS/ldconfig-2.2.4-9.1mdk.ia64.rpm
174dee8685f5549aabb40d650ed32079  ia64/8.1/RPMS/nscd-2.2.4-9.1mdk.ia64.rpm
02d799a94863352278b4fb07b7ff50ff  ia64/8.1/SRPMS/glibc-2.2.4-9.1mdk.src.rpm

Corporate Server 1.0.1:
516acd7c51fee17ca9bb8a891075075c  1.0.1/RPMS/glibc-2.1.3-19.1mdk.i586.rpm
5ca14ef88a3d24f3fd9bcba49081ded8  1.0.1/RPMS/glibc-devel-2.1.3-19.1mdk.i586.rpm
fb24d6b2a254859bc909c36a38d9d139  1.0.1/RPMS/glibc-profile-2.1.3-19.1mdk.i586.rpm
29e2a828a36cfd258afa3d7e8bcb7f4d  1.0.1/RPMS/nscd-2.1.3-19.1mdk.i586.rpm
28033029837d789d934a419dfc1131b2  1.0.1/SRPMS/glibc-2.1.3-19.1mdk.src.rpm

Single Network Firewall 7.2:
e19276709c2a4735ddee4a0951df4e12  snf7.2/RPMS/glibc-2.1.3-19.2mdk.i586.rpm
92a7e4cee85c42c4ea037df54148a596  snf7.2/RPMS/glibc-devel-2.1.3-19.2mdk.i586.rpm
3bd6c44c0ab01b82760c4d366f59d781  snf7.2/RPMS/glibc-profile-2.1.3-19.2mdk.i586.rpm
6972ae990d40b74ea6410a693fec4c7a  snf7.2/RPMS/nscd-2.1.3-19.2mdk.i586.rpm
3f842988e9aab5ceb3067ec0f9310e09  snf7.2/SRPMS/glibc-2.1.3-19.2mdk.src.rpm
________________________________________________________________________

Bug IDs fixed (see https://qa.mandrakesoft.com for more information):

________________________________________________________________________

Before applying this update, make sure all previously released updates
relevant to your system have been applied.  To upgrade automatically, 
use MandrakeUpdate.

If you want to upgrade manually, download the updated package from one
of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm".

You can download the updates directly from one of the mirror sites
listed at:

  http://www.linux-mandrake.com/en/ftp.php3.

Updated packages are available in the "updates/[ver]/RPMS/" directory.
For example, if you are looking for an updated RPM package for
Mandrake Linux 8.1, look for it in "updates/8.1/RPMS/".  Updated source
RPMs are available as well, but you generally do not need to download
them.

Please be aware that sometimes it takes the mirrors a few hours to
update.

You can view other security advisories for Mandrake Linux at:

  http://www.linux-mandrake.com/en/security/

If you want to report vulnerabilities, please contact

  security@linux-mandrake.com
________________________________________________________________________

Mandrake Linux has several security-related mailing list services that
anyone can subscribe to.  Information on these lists can be obtained by
visiting:

  http://www.mandrakesecure.net/en/mlist.php
________________________________________________________________________

Type Bits/KeyID     Date       User ID
pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team
  <security@linux-mandrake.com>


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