CVE-2014-5119

Tavis Ormandy discovered a heap-based buffer overflow in the transliteration module loading code. As a result, an attacker who can supply a crafted destination character set argument to iconv-related character conversation functions could achieve arbitrary code execution.

This update removes support of loadable gconv transliteration modules. Besides the security vulnerability, the module loading code had functionality defects which prevented it from working for the intended purpose. (CVE-2014-5119)

Adhemerval Zanella Netto discovered out-of-bounds reads in additional code page decoding functions (IBM933, IBM935, IBM937, IBM939, IBM1364) that can be used to crash the systems, causing a denial of service conditions (CVE-2014-6040).

These are all security issues fixed in the glibc-2.24-2.3 package on the GA media of openSUSE Tumbleweed.

This glibc update fixes a critical privilege escalation problem and two non-security issues:

* bnc#892073: An off-by-one error leading to a heap-based buffer
  overflow was found in __gconv_translit_find(). An exploit that
  targets the problem is publicly available. (CVE-2014-5119)
* bnc#892065: setenv-alloca.patch: Avoid unbound alloca in setenv.
* bnc#888347: printf-multibyte-format.patch: Don't parse %s format
  argument as multi-byte string.

Security Issues:

* CVE-2014-5119
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5119>

This glibc update fixes a critical privilege escalation problem and two non-security issues:

* bnc#892073: An off-by-one error leading to a heap-based buffer
  overflow was found in __gconv_translit_find(). An exploit that
  targets the problem is publicly available. (CVE-2014-5119)
* bnc#892065: setenv-alloca.patch: Avoid unbound alloca in setenv.
* bnc#888347: printf-multibyte-format.patch: Don't parse %s format
  argument as multi-byte string.

Security Issues:

* CVE-2014-5119
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5119>

This glibc update fixes a critical privilege escalation problem and two non-security issues:

* bnc#892073: An off-by-one error leading to a heap-based buffer
  overflow was found in __gconv_translit_find(). An exploit that
  targets the problem is publicly available. (CVE-2014-5119)
* bnc#892065: setenv-alloca.patch: Avoid unbound alloca in setenv.
* bnc#888347: printf-multibyte-format.patch: Don't parse %s format
  argument as multi-byte string.

Security Issues:

* CVE-2014-5119
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5119>

This update for glibc contains the following fixes:

* Fix integer overflows in malloc (CVE-2013-4332, bnc#839870)
* Fix buffer overflow in glob (bnc#691365)
* Fix buffer overflow in strcoll (CVE-2012-4412, bnc#779320)
* Update mount flags in <sys/mount.h> (bnc#791928)
* Fix buffer overrun in regexp matcher (CVE-2013-0242, bnc#801246)
* Fix memory leaks in dlopen (bnc#811979)
* Fix stack overflow in getaddrinfo with many results (CVE-2013-1914,
  bnc#813121)
* Fix check for XEN build in glibc_post_upgrade that causes missing
  init re-exec (bnc#818628)
* Don't raise UNDERFLOW in tan/tanf for small but normal argument
  (bnc#819347)
* Properly cross page boundary in SSE4.2 implementation of strcmp
  (bnc#822210)
* Fix robust mutex handling after fork (bnc#827811)
* Fix missing character in IBM-943 charset (bnc#828235)
* Fix use of alloca in gaih_inet (bnc#828637)
* Initialize pointer guard also in static executables (CVE-2013-4788,
  bnc#830268)
* Fix readdir_r with long file names (CVE-2013-4237, bnc#834594).

Security Issues:

* CVE-2012-4412
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4412>
* CVE-2013-0242
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0242>
* CVE-2013-1914
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1914>
* CVE-2013-4237
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4237>
* CVE-2013-4332
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4332>
* CVE-2013-4788
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4788>

Off-by-one error in the __gconv_translit_find function in gconv_trans.c in GNU C Library (aka glibc) allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via vectors related to the CHARSET environment variable and gconv transliteration modules.

Tavis Ormandy and John Haxby discovered that the GNU C Library contained an off-by-one error when performing transliteration module loading. A local attacker could exploit this to gain administrative privileges. (CVE-2014-5119)

USN-2306-1 fixed vulnerabilities in the GNU C Library. On Ubuntu 10.04 LTS and Ubuntu 12.04 LTS the security update for CVE-2014-0475 caused a regression with localplt on PowerPC. This update fixes the problem. We apologize for the inconvenience.