Denial of service in GNU C Library

1) Input validation error

EUVDB-ID: #VU54337

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-10228

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier, when invoked with multiple suffixes in the destination encoding (TRANSLATE or IGNORE) along with the -c option, enters an infinite loop when processing invalid multi-byte input sequences, leading to a denial of service.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Glibc: 2.0 - 2.31

External links

http://openwall.com/lists/oss-security/2017/03/01/10
http://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
http://security.gentoo.org/glsa/202101-20
http://sourceware.org/bugzilla/show_bug.cgi?id=19519
http://sourceware.org/bugzilla/show_bug.cgi?id=19519#c21
http://sourceware.org/bugzilla/show_bug.cgi?id=26224

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.