Vulnerability identifier: #VU41360

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-5119

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Glibc: 2.0 - 2.1.97

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External links
http://googleprojectzero.blogspot.com/2014/08/the-poisoned-nul-byte-2014-edition.html
http://linux.oracle.com/errata/ELSA-2015-0092.html
http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00017.html
http://rhn.redhat.com/errata/RHSA-2014-1118.html
http://seclists.org/fulldisclosure/2014/Aug/69
http://secunia.com/advisories/60345
http://secunia.com/advisories/60358
http://secunia.com/advisories/60441
http://secunia.com/advisories/61074
http://secunia.com/advisories/61093
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-5119
http://www.debian.org/security/2014/dsa-3012
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175
http://www.openwall.com/lists/oss-security/2014/07/14/1
http://www.openwall.com/lists/oss-security/2014/08/13/5
http://www.securityfocus.com/bid/68983
http://www.securityfocus.com/bid/69738
http://www-01.ibm.com/support/docview.wss?uid=swg21685604
http://code.google.com/p/google-security-research/issues/detail?id=96
http://rhn.redhat.com/errata/RHSA-2014-1110.html
http://security.gentoo.org/glsa/201602-02
http://sourceware.org/bugzilla/show_bug.cgi?id=17187

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.