Input validation error in GNU Glibc

1) Input validation error

EUVDB-ID: #VU110111

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-6656

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Glibc: 0.1 - 2.15

CPE2.3

• cpe:2.3:a:gnu:glibc:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:glibc:0.4:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:glibc:0.4.1:*:*:*:*:*:*:*

External links

https://www.debian.org/security/2015/dsa-3142
https://www.mandriva.com/security/advisories?name=MDVSA-2014:175
https://www.openwall.com/lists/oss-security/2014/08/29/3
https://www.openwall.com/lists/oss-security/2014/09/02/1
https://www.securityfocus.com/bid/69472
https://www.ubuntu.com/usn/USN-2432-1
https://security.gentoo.org/glsa/201503-04
https://sourceware.org/bugzilla/show_bug.cgi?id=14134
https://sourceware.org/git/?p=glibc.git;a=commit;h=6e230d11837f3ae7b375ea69d7905f0d18eb79e5

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.