[DLA 416-1] eglibc security update

Package : eglibc
Version : 2.11.3-4+deb6u11
CVE ID : CVE-2015-7547

Several vulnerabilities have been fixed in the Debian GNU C Library,
eglibc:

CVE-2015-7547
The Google Security Team and Red Hat discovered that the glibc
host name resolver function, getaddrinfo, when processing
AF_UNSPEC queries (for dual A/AAAA lookups), could mismange its
internal buffers, leading to a stack-based buffer overflow and
arbitrary code execution. This vulnerability affects most
applications which perform host name resolution using getaddrinfo,
including system services.

The following fixed vulnerabilities currently lack CVE assignment:

Andreas Schwab reported a memory leak (memory allocation without a
matching deallocation) while processing certain DNS answers in
getaddrinfo, related to the _nss_dns_gethostbyname4_r function.
This vulnerability could lead to a denial of service.

For Debian 6 "Squeeze", these issues have been fixed in eglibc version
eglibc_2.11.3-4+deb6u11. In addition this version corrects the fix for
CVE-2014-9761 in Squeeze, which have wrongly marked a few symbols as
public instead of private.

While it is only necessary to ensure that all processes are not using
the old eglibc anymore, it is recommended to reboot the machines after
applying the security upgrade.

We recommend you to upgrade your eglibc packages.

[DLA 417-1] xdelta3 security update

Package : xdelta3
Version : 0y.dfsg-1+deb6u1
CVE ID : CVE-2014-9765
Debian Bug : 814067

It was discovered that there was a buffer overflow in in xdelta3,
a diff utility which works with binary files. This vulnerability
allowed arbitrary code execution from input files.

For Debian 6 Squeeze, this issue has been fixed in xdelta3 version
0y.dfsg-1+deb6u1.

[DLA 418-1] wordpress security update

Package : wordpress
Version : 3.6.1+dfsg-1~deb6u9
CVE ID : CVE-2016-2221 CVE-2016-2222
Debian Bug : 813697

WordPress versions 4.4.1 and earlier are affected by two security
issues: a possible Side Request Forgery Vulnerability for certain
local URIs, reported by Ronni Skansing; and an open redirection
attack, reported by Shailesh Suthar.

CVE-2016-2221
Wordpress could be vulnerable for an open redirection attack
which was fixed by better validation of the URL used in HTTP
redirects.

CVE-2016-2222
It was discovered that Wordpress was susceptible for a possible Side
Request Forgery Vulnerability because it considered for instance
0.1.2.3 as a valid IP.


For Debian 6 "Squeeze", these problems have been fixed in version
3.6.1+dfsg-1~deb6u9.

We recommend that you upgrade your wordpress packages.

[DSA 3480-1] eglibc security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-3480-1 security@debian.org
https://www.debian.org/security/ Florian Weimer
February 16, 2016 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : eglibc
CVE ID : CVE-2014-8121 CVE-2015-1781 CVE-2015-7547 CVE-2015-8776
CVE-2015-8777 CVE-2015-8778 CVE-2015-8779
Debian Bug : 779587 796105 798316 801691 803927 812441 812445 812455

Several vulnerabilities have been fixed in the GNU C Library, eglibc.

The CVE-2015-7547 vulnerability listed below is considered to have
critical impact.

CVE-2014-8121

Robin Hack discovered that the nss_files database did not
correctly implement enumeration interleaved with name-based or
ID-based lookups. This could cause the enumeration enter an
endless loop, leading to a denial of service.

CVE-2015-1781

Arjun Shankar discovered that the _r variants of host name
resolution functions (like gethostbyname_r), when performing DNS
name resolution, suffered from a buffer overflow if a misaligned
buffer was supplied by the applications, leading to a crash or,
potentially, arbitrary code execution. Most applications are not
affected by this vulnerability because they use aligned buffers.

CVE-2015-7547

The Google Security Team and Red Hat discovered that the eglibc
host name resolver function, getaddrinfo, when processing
AF_UNSPEC queries (for dual A/AAAA lookups), could mismanage its
internal buffers, leading to a stack-based buffer overflow and
arbitrary code execution. This vulnerability affects most
applications which perform host name resolution using getaddrinfo,
including system services.

CVE-2015-8776

Adam Nielsen discovered that if an invalid separated time value
is passed to strftime, the strftime function could crash or leak
information. Applications normally pass only valid time
information to strftime; no affected applications are known.

CVE-2015-8777

Hector Marco-Gisbert reported that LD_POINTER_GUARD was not
ignored for SUID programs, enabling an unintended bypass of a
security feature. This update causes eglibc to always ignore the
LD_POINTER_GUARD environment variable.

CVE-2015-8778

Szabolcs Nagy reported that the rarely-used hcreate and hcreate_r
functions did not check the size argument properly, leading to a
crash (denial of service) for certain arguments. No impacted
applications are known at this time.

CVE-2015-8779

The catopen function contains several unbound stack allocations
(stack overflows), causing it the crash the process (denial of
service). No applications where this issue has a security impact
are currently known.

The following fixed vulnerabilities currently lack CVE assignment:

Joseph Myers reported discovered that an integer overflow in the
strxfrm can lead to heap-based buffer overflow, possibly allowing
arbitrary code execution. In addition, a fallback path in strxfrm
uses an unbounded stack allocation (stack overflow), leading to a
crash or erroneous application behavior.

Kostya Serebryany reported that the fnmatch function could skip
over the terminating NUL character of a malformed pattern, causing
an application calling fnmatch to crash (denial of service).

Joseph Myers reported that the IO_wstr_overflow function,
internally used by wide-oriented character streams, suffered from
an integer overflow, leading to a heap-based buffer overflow. On
GNU/Linux systems, wide-oriented character streams are rarely
used, and no affected applications are known.

Andreas Schwab reported a memory leak (memory allocation without a
matching deallocation) while processing certain DNS answers in
getaddrinfo, related to the _nss_dns_gethostbyname4_r function.
This vulnerability could lead to a denial of service.

While it is only necessary to ensure that all processes are not using
the old eglibc anymore, it is recommended to reboot the machines after
applying the security upgrade.

For the oldstable distribution (wheezy), these problems have been fixed
in version 2.13-38+deb7u10.

We recommend that you upgrade your eglibc packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

[DSA 3481-1] glibc security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-3481-1 security@debian.org
https://www.debian.org/security/ Florian Weimer
February 16, 2016 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : glibc
CVE ID : CVE-2015-7547 CVE-2015-8776 CVE-2015-8778 CVE-2015-8779
Debian Bug : 812441 812445 812455

Several vulnerabilities have been fixed in the GNU C Library, glibc.

The first vulnerability listed below is considered to have critical
impact.

CVE-2015-7547

The Google Security Team and Red Hat discovered that the glibc
host name resolver function, getaddrinfo, when processing
AF_UNSPEC queries (for dual A/AAAA lookups), could mismanage its
internal buffers, leading to a stack-based buffer overflow and
arbitrary code execution. This vulnerability affects most
applications which perform host name resolution using getaddrinfo,
including system services.

CVE-2015-8776

Adam Nielsen discovered that if an invalid separated time value
is passed to strftime, the strftime function could crash or leak
information. Applications normally pass only valid time
information to strftime; no affected applications are known.

CVE-2015-8778

Szabolcs Nagy reported that the rarely-used hcreate and hcreate_r
functions did not check the size argument properly, leading to a
crash (denial of service) for certain arguments. No impacted
applications are known at this time.

CVE-2015-8779

The catopen function contains several unbound stack allocations
(stack overflows), causing it the crash the process (denial of
service). No applications where this issue has a security impact
are currently known.

While it is only necessary to ensure that all processes are not using
the old glibc anymore, it is recommended to reboot the machines after
applying the security upgrade.

For the stable distribution (jessie), these problems have been fixed in
version 2.19-18+deb8u3.

For the unstable distribution (sid), these problems will be fixed in
version 2.21-8.

We recommend that you upgrade your glibc packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/