Red Hat: 2015:0090-01: glibc: Critical Advisory
Summary
The glibc packages provide the standard C libraries (libc), POSIX thread
libraries (libpthread), standard math libraries (libm), and the Name
Server Caching Daemon (nscd) used by multiple programs on the system.
Without these libraries, the Linux system cannot function correctly.
A heap-based buffer overflow was found in glibc's
__nss_hostname_digits_dots() function, which is used by the gethostbyname()
and gethostbyname2() glibc function calls. A remote attacker able to make
an application call either of these functions could use this flaw to
execute arbitrary code with the permissions of the user running the
application. (CVE-2015-0235)
Red Hat would like to thank Qualys for reporting this issue.
All glibc users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue.
Summary
Solution
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2015-0235 https://access.redhat.com/security/updates/classification/#critical
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
glibc-2.5-123.el5_11.1.src.rpm
i386:
glibc-2.5-123.el5_11.1.i386.rpm
glibc-2.5-123.el5_11.1.i686.rpm
glibc-common-2.5-123.el5_11.1.i386.rpm
glibc-debuginfo-2.5-123.el5_11.1.i386.rpm
glibc-debuginfo-2.5-123.el5_11.1.i686.rpm
glibc-debuginfo-common-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.i386.rpm
glibc-headers-2.5-123.el5_11.1.i386.rpm
glibc-utils-2.5-123.el5_11.1.i386.rpm
nscd-2.5-123.el5_11.1.i386.rpm
x86_64:
glibc-2.5-123.el5_11.1.i686.rpm
glibc-2.5-123.el5_11.1.x86_64.rpm
glibc-common-2.5-123.el5_11.1.x86_64.rpm
glibc-debuginfo-2.5-123.el5_11.1.i386.rpm
glibc-debuginfo-2.5-123.el5_11.1.i686.rpm
glibc-debuginfo-2.5-123.el5_11.1.x86_64.rpm
glibc-debuginfo-common-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.x86_64.rpm
glibc-headers-2.5-123.el5_11.1.x86_64.rpm
glibc-utils-2.5-123.el5_11.1.x86_64.rpm
nscd-2.5-123.el5_11.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
glibc-2.5-123.el5_11.1.src.rpm
i386:
glibc-2.5-123.el5_11.1.i386.rpm
glibc-2.5-123.el5_11.1.i686.rpm
glibc-common-2.5-123.el5_11.1.i386.rpm
glibc-debuginfo-2.5-123.el5_11.1.i386.rpm
glibc-debuginfo-2.5-123.el5_11.1.i686.rpm
glibc-debuginfo-common-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.i386.rpm
glibc-headers-2.5-123.el5_11.1.i386.rpm
glibc-utils-2.5-123.el5_11.1.i386.rpm
nscd-2.5-123.el5_11.1.i386.rpm
ia64:
glibc-2.5-123.el5_11.1.i686.rpm
glibc-2.5-123.el5_11.1.ia64.rpm
glibc-common-2.5-123.el5_11.1.ia64.rpm
glibc-debuginfo-2.5-123.el5_11.1.i686.rpm
glibc-debuginfo-2.5-123.el5_11.1.ia64.rpm
glibc-debuginfo-common-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.ia64.rpm
glibc-headers-2.5-123.el5_11.1.ia64.rpm
glibc-utils-2.5-123.el5_11.1.ia64.rpm
nscd-2.5-123.el5_11.1.ia64.rpm
ppc:
glibc-2.5-123.el5_11.1.ppc.rpm
glibc-2.5-123.el5_11.1.ppc64.rpm
glibc-common-2.5-123.el5_11.1.ppc.rpm
glibc-debuginfo-2.5-123.el5_11.1.ppc.rpm
glibc-debuginfo-2.5-123.el5_11.1.ppc64.rpm
glibc-devel-2.5-123.el5_11.1.ppc.rpm
glibc-devel-2.5-123.el5_11.1.ppc64.rpm
glibc-headers-2.5-123.el5_11.1.ppc.rpm
glibc-utils-2.5-123.el5_11.1.ppc.rpm
nscd-2.5-123.el5_11.1.ppc.rpm
s390x:
glibc-2.5-123.el5_11.1.s390.rpm
glibc-2.5-123.el5_11.1.s390x.rpm
glibc-common-2.5-123.el5_11.1.s390x.rpm
glibc-debuginfo-2.5-123.el5_11.1.s390.rpm
glibc-debuginfo-2.5-123.el5_11.1.s390x.rpm
glibc-devel-2.5-123.el5_11.1.s390.rpm
glibc-devel-2.5-123.el5_11.1.s390x.rpm
glibc-headers-2.5-123.el5_11.1.s390x.rpm
glibc-utils-2.5-123.el5_11.1.s390x.rpm
nscd-2.5-123.el5_11.1.s390x.rpm
x86_64:
glibc-2.5-123.el5_11.1.i686.rpm
glibc-2.5-123.el5_11.1.x86_64.rpm
glibc-common-2.5-123.el5_11.1.x86_64.rpm
glibc-debuginfo-2.5-123.el5_11.1.i386.rpm
glibc-debuginfo-2.5-123.el5_11.1.i686.rpm
glibc-debuginfo-2.5-123.el5_11.1.x86_64.rpm
glibc-debuginfo-common-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.i386.rpm
glibc-devel-2.5-123.el5_11.1.x86_64.rpm
glibc-headers-2.5-123.el5_11.1.x86_64.rpm
glibc-utils-2.5-123.el5_11.1.x86_64.rpm
nscd-2.5-123.el5_11.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
Updated glibc packages that fix one security issue are now available forRed Hat Enterprise Linux 5.Red Hat Product Security has rated this update as having Critical securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Bugs Fixed
1183461 - CVE-2015-0235 glibc: __nss_hostname_digits_dots() heap-based buffer overflow