Out-of-bounds read in xorg.freedesktop libxi

1) Out-of-bounds read

EUVDB-ID: #VU32229

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7945

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

Multiple integer overflows in X.org libXi before 1.7.7 allow remote X servers to cause a denial of service (out-of-bounds memory access or infinite loop) via vectors involving length fields.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libxi: 1.7.1 - 1.7.6

External links

http://www.openwall.com/lists/oss-security/2016/10/04/2
http://www.openwall.com/lists/oss-security/2016/10/04/4
http://www.securityfocus.com/bid/93364
http://www.securitytracker.com/id/1036945
http://cgit.freedesktop.org/xorg/lib/libXi/commit/?id=19a9cd607de73947fcfb104682f203ffe4e1f4e5
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C3NTWIWSQ575GREBVAOUQUIMDL5CDVGP/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KVTZ2XLPKLASQUIQA2GMKKAUOQIUMM7I/
http://lists.x.org/archives/xorg-announce/2016-October/002720.html
http://security.gentoo.org/glsa/201704-03

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.