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Vulnerability Details : CVE-2017-8779

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.
Publish Date : 2017-05-04 Last Update Date : 2019-10-03
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 770

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2017:1262: rpcbind security update (Important) oval:com.redhat.rhsa:def:20171262 unix
RHSA-2017:1263: libtirpc security update (Important) oval:com.redhat.rhsa:def:20171263 unix
RHSA-2017:1267: rpcbind security update (Important) oval:com.redhat.rhsa:def:20171267 unix
RHSA-2017:1268: libtirpc security update (Important) oval:com.redhat.rhsa:def:20171268 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2017-8779

# Product Type Vendor Product Version Update Edition Language
1 Application Libtirpc Project Libtirpc * * * * Version Details Vulnerabilities
2 Application Ntirpc Project Ntirpc * * * * Version Details Vulnerabilities
3 Application Rpcbind Project Rpcbind * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Libtirpc Project Libtirpc 1
Ntirpc Project Ntirpc 1
Rpcbind Project Rpcbind 1

- References For CVE-2017-8779

https://security.gentoo.org/glsa/201706-07
GENTOO GLSA-201706-07
https://access.redhat.com/errata/RHSA-2017:1268
REDHAT RHSA-2017:1268
https://usn.ubuntu.com/3759-2/
UBUNTU USN-3759-2
https://access.redhat.com/errata/RHSA-2017:1267
REDHAT RHSA-2017:1267
https://usn.ubuntu.com/3759-1/
UBUNTU USN-3759-1
https://access.redhat.com/errata/RHSA-2017:1262
REDHAT RHSA-2017:1262
https://access.redhat.com/errata/RHSA-2017:1395
REDHAT RHSA-2017:1395
https://access.redhat.com/errata/RHSA-2017:1263
REDHAT RHSA-2017:1263
https://www.exploit-db.com/exploits/41974/
EXPLOIT-DB 41974
https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/
https://security.netapp.com/advisory/ntap-20180109-0001/ CONFIRM
http://www.securitytracker.com/id/1038532
SECTRACK 1038532
http://www.securityfocus.com/bid/98325
BID 98325 Rpcbind CVE-2017-8779 Remote Denial of Service Vulnerability Release Date:2017-07-16
https://github.com/drbothen/GO-RPCBOMB
http://openwall.com/lists/oss-security/2017/05/03/12
http://openwall.com/lists/oss-security/2017/05/04/1
https://github.com/guidovranken/rpcbomb/
http://www.debian.org/security/2017/dsa-3845
DEBIAN DSA-3845
https://access.redhat.com/errata/RHBA-2017:1497
REDHAT RHBA-2017:1497

- Metasploit Modules Related To CVE-2017-8779

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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