CVE-2014-4043

The posix_spawn_file_actions_addopen function in glibc before 2.20 does not copy its path argument in accordance with the POSIX specification, which allows context-dependent attackers to trigger use-after-free vulnerabilities.

Stephane Chazelas discovered that directory traversal issue in locale handling in glibc. glibc accepts relative paths with ".." components in the LC_* and LANG variables. Together with typical OpenSSH configurations (with suitable AcceptEnv settings in sshd_config), this could conceivably be used to bypass ForceCommand restrictions (or restricted shells), assuming the attacker has sufficient level of access to a file system location on the host to create crafted locale definitions there. (CVE-2014-0475)

David Reid, Glyph Lefkowitz, and Alex Gaynor discovered a bug where posix_spawn_file_actions_addopen fails to copy the path argument (glibc bz #17048) which can, in conjunction with many common memory management techniques from an application, lead to a use after free, or other vulnerabilities. (CVE-2014-4043)

This update also fixes the following issues: x86: Disable x87 inline functions for SSE2 math (glibc bz #16510) malloc: Fix race in free() of fastbin chunk (glibc bz #15073)

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>

The posix_spawn_file_actions_addopen function in glibc before 2.20 does not copy its path argument in accordance with the POSIX specification, which allows context-dependent attackers to trigger use-after-free vulnerabilities.

Maksymilian Arciemowicz discovered that the GNU C Library incorrectly handled the getaddrinfo() function. An attacker could use this issue to cause a denial of service. This issue only affected Ubuntu 10.04 LTS. (CVE-2013-4357)

It was discovered that the GNU C Library incorrectly handled the getaddrinfo() function. An attacker could use this issue to cause a denial of service. This issue only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS. (CVE-2013-4458)

Stephane Chazelas discovered that the GNU C Library incorrectly handled locale environment variables. An attacker could use this issue to possibly bypass certain restrictions such as the ForceCommand restrictions in OpenSSH. (CVE-2014-0475)

David Reid, Glyph Lefkowitz, and Alex Gaynor discovered that the GNU C Library incorrectly handled posix_spawn_file_actions_addopen() path arguments. An attacker could use this issue to cause a denial of service. (CVE-2014-4043)