CVE-2017-8779 Information

Description

rpcbind through 0.2.4 LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3 and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation for XDR strings which allows remote attackers to cause a denial of service (memory consumption with no subsequent free) via a crafted UDP packet to port 111 aka rpcbomb.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://openwall.com/lists/oss-security/2017/05/03/12 http://openwall.com/lists/oss-security/2017/05/04/1 http://www.debian.org/security/2017/dsa-3845 http://www.securityfocus.com/bid/98325 http://www.securitytracker.com/id/1038532 https://access.redhat.com/errata/RHBA-2017:1497 https://access.redhat.com/errata/RHSA-2017:1262 https://access.redhat.com/errata/RHSA-2017:1263 https://access.redhat.com/errata/RHSA-2017:1267 https://access.redhat.com/errata/RHSA-2017:1268 https://access.redhat.com/errata/RHSA-2017:1395 https://github.com/drbothen/GO-RPCBOMB https://github.com/guidovranken/rpcbomb/ https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/ https://security.gentoo.org/glsa/201706-07 https://security.netapp.com/advisory/ntap-20180109-0001/ https://usn.ubuntu.com/3759-1/ https://usn.ubuntu.com/3759-2/ https://www.exploit-db.com/exploits/41974/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5