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CVE-2017-8779

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4986-2
Posted Jun 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4986-2 - USN-4986-1 fixed a vulnerability in rpcbind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that rpcbind incorrectly handled certain large data sizes. A remote attacker could use this issue to cause rpcbind to consume resources, leading to a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2017-8779
SHA-256 | 32b149ed8230cc124da11b6389b252a579c710c6cb7964575dcf45329cc714ef
Ubuntu Security Notice USN-4986-1
Posted Jun 9, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4986-1 - It was discovered that rpcbind incorrectly handled certain large data sizes. A remote attacker could use this issue to cause rpcbind to consume resources, leading to a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2017-8779
SHA-256 | 77b52e225377f615a2e109e7f723e24881793f0b8636500930f45cef0235d2cd
Ubuntu Security Notice USN-3759-2
Posted Sep 5, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3759-2 - USN-3759-1 fixed a vulnerability in libtirpc. This update provides the corresponding update for Ubuntu 12.04 ESM. Aldy Hernandez discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-4429, CVE-2017-8779, CVE-2018-14622
SHA-256 | 35536226974c7fe774b799664ae0331c21d7ef9b12b88831452d0d1946442c2f
Ubuntu Security Notice USN-3759-1
Posted Sep 5, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3759-1 - Aldy Hernandez discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. It was discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-4429, CVE-2017-8779, CVE-2018-14622
SHA-256 | bb42ed420ac1a4099eb60922206da39be8999455162b87917730bf295851efff
Red Hat Security Advisory 2017-1395-01
Posted Jun 6, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1395-01 - This package contains a new implementation of the original libtirpc, transport-independent RPC library for NFS-Ganesha. Security Fix: It was found that due to the way rpcbind uses libtirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer.

tags | advisory, memory leak
systems | linux, redhat
advisories | CVE-2017-8779
SHA-256 | 69097b8242e606c94f659acf6900a750c1b9ea1d20a4996a33525ffb378f843a
Gentoo Linux Security Advisory 201706-07
Posted Jun 6, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201706-7 - A vulnerability has been found in Libtirpc and RPCBind which may allow a remote attacker to cause a Denial of Service condition. Versions less than 0.2.4-r are affected.

tags | advisory, remote, denial of service
systems | linux, gentoo
advisories | CVE-2017-8779
SHA-256 | 59624e621f93121cd0d16496963f23e5c5f677137e142ed1938abe9307040642
Red Hat Security Advisory 2017-1268-01
Posted May 24, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1268-01 - The libtirpc packages contain SunLib's implementation of transport-independent remote procedure call documentation, which includes a library required by programs in the nfs-utils and rpcbind packages. Security Fix: It was found that due to the way rpcbind uses libtirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer.

tags | advisory, remote, memory leak
systems | linux, redhat
advisories | CVE-2017-8779
SHA-256 | 0007e2623162483258a522432d2bf8028209d9e4813b7b7580508a084bb149bc
Red Hat Security Advisory 2017-1267-01
Posted May 23, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1267-01 - The rpcbind utility is a server that converts Remote Procedure Call program numbers into universal addresses. It must be running on the host to be able to make RPC calls on a server on that machine. Security Fix: It was found that due to the way rpcbind uses libtirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer.

tags | advisory, remote, memory leak
systems | linux, redhat
advisories | CVE-2017-8779
SHA-256 | be1bec16ec036a0c7830fe3c4598296e0dca514477d0acaa83c8975bede107bd
Red Hat Security Advisory 2017-1262-01
Posted May 22, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1262-01 - The rpcbind utility is a server that converts Remote Procedure Call program numbers into universal addresses. It must be running on the host to be able to make RPC calls on a server on that machine. Security Fix: It was found that due to the way rpcbind uses libtirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer.

tags | advisory, remote, memory leak
systems | linux, redhat
advisories | CVE-2017-8779
SHA-256 | 9df768ffe02abc9c9d33d36f5d1cb57af1e669c292ca02824422babbe60dd117
Red Hat Security Advisory 2017-1263-01
Posted May 22, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1263-01 - The libtirpc packages contain SunLib's implementation of transport-independent remote procedure call documentation, which includes a library required by programs in the nfs-utils and rpcbind packages. Security Fix: It was found that due to the way rpcbind uses libtirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer.

tags | advisory, remote, memory leak
systems | linux, redhat
advisories | CVE-2017-8779
SHA-256 | 49d9acba01c695412d6018d26794d50acb5f77b1730e133e0169fa768d25b526
Debian Security Advisory 3845-1
Posted May 9, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3845-1 - Guido Vranken discovered that incorrect memory management in libtirpc, a transport-independent RPC library used by rpcbind and other programs may result in denial of service via memory exhaustion (depending on memory management settings).

tags | advisory, denial of service
systems | linux, debian
advisories | CVE-2017-8779
SHA-256 | 7a8b8ee3c3a5ef9eae5d5ea439c099ab96484001aea09ca6539efce6324e98a8
RPCBind / libtirpc Denial Of Service
Posted May 8, 2017
Authored by Guido Vranken

RPCBind / libtirpc denial of service exploit.

tags | exploit, denial of service
advisories | CVE-2017-8779
SHA-256 | d0ca6273bf34f85942ea8f97a7137b04ccf6c78c845b743af2ade8ba0a24ca25
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