This update for libtirpc fixes the following issues :

  - CVE-2017-8779: crafted UDP packaged could lead rpcbind     to denial-of-service (bsc#1037559)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Memory leak when failing to parse XDR strings or bytearrays

It was found that due to the way rpcbind uses libtirpc (libntirpc), 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. (CVE-2017-8779)

According to the version of the libtirpc package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - It was found that due to the way rpcbind uses libtirpc     (libntirpc), 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. (CVE-2017-8779)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the rpcbind package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - It was found that due to the way rpcbind uses libtirpc     (libntirpc), 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. (CVE-2017-8779)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for libtirpc is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The libtirpc packages contain SunLib's implementation of transport-independent remote procedure call (TI-RPC) documentation, which includes a library required by programs in the nfs-utils and rpcbind packages.

Security Fix(es) :

* It was found that due to the way rpcbind uses libtirpc (libntirpc), 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. (CVE-2017-8779)

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for rpcbind is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

[Updated 16 June 2017] The packages distributed with this errata have a bug that can cause the rpcbind utility to terminate unexpectedly at start. RHBA-2017:1435 was released on 13 June 2017 to address this issue.

The rpcbind utility is a server that converts Remote Procedure Call (RPC) 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(es) :

* It was found that due to the way rpcbind uses libtirpc (libntirpc), 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. (CVE-2017-8779)

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the libtirpc package has been released.

According to the version of the rpcbind package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - It was found that due to the way rpcbind uses libtirpc     (libntirpc), 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.(CVE-2017-8779)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the rpcbind package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - 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.(CVE-2017-8779)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the libtirpc package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - It was found that due to the way rpcbind uses libtirpc     (libntirpc), 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.(CVE-2017-8779)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2017-8779)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2017-1656:01 advisory.

    The rpcbind utility is a server that converts RPC 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 issues fixed with this release:
    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.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2017-1681:01 advisory.

    This package contains SunLib's implementation of transport-independent     RPC (TI-RPC) documentation.  This library forms a piece of the base of     Open Network Computing (ONC), and is derived directly from the     Solaris 2.3 source.
    TI-RPC is an enhanced version of TS-RPC that requires the UNIX System V     Transport Layer Interface (TLI) or an equivalent X/Open Transport Interface     (XTI).  TI-RPC is on-the-wire compatible with the TS-RPC, which is supported     by almost 70 vendors on all major operating systems.  TS-RPC source code     (RPCSRC 4.0) remains available from several internet sites.
    Security issues fixed with this release:
    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.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
100366	openSUSE Security Update : libtirpc (openSUSE-2017-608)	Nessus	SuSE Local Security Checks	5/24/2017	12/18/2025	high
100641	Amazon Linux AMI : libtirpc (ALAS-2017-840)	Nessus	Amazon Linux Local Security Checks	6/7/2017	12/17/2025	high
100689	EulerOS 2.0 SP1 : libtirpc (EulerOS-SA-2017-1096)	Nessus	Huawei Local Security Checks	6/9/2017	12/16/2025	high
100696	EulerOS 2.0 SP2 : rpcbind (EulerOS-SA-2017-1103)	Nessus	Huawei Local Security Checks	6/9/2017	12/16/2025	high
101467	Virtuozzo 7 : libtirpc / libtirpc-devel (VZLSA-2017-1263)	Nessus	Virtuozzo Local Security Checks	7/13/2017	12/11/2025	high
101470	Virtuozzo 6 : rpcbind (VZLSA-2017-1267)	Nessus	Virtuozzo Local Security Checks	7/13/2017	12/11/2025	high
121696	Photon OS 1.0: Libtirpc PHSA-2017-0017	Nessus	PhotonOS Local Security Checks	2/7/2019	7/23/2024	high
136270	EulerOS Virtualization for ARM 64 3.0.2.0 : rpcbind (EulerOS-SA-2020-1567)	Nessus	Huawei Local Security Checks	5/1/2020	3/13/2024	high
137032	EulerOS 2.0 SP5 : rpcbind (EulerOS-SA-2020-1614)	Nessus	Huawei Local Security Checks	6/2/2020	3/8/2024	high
140963	EulerOS Virtualization for ARM 64 3.0.6.0 : libtirpc (EulerOS-SA-2020-2015)	Nessus	Huawei Local Security Checks	9/29/2020	2/19/2024	high
251810	Linux Distros Unpatched Vulnerability : CVE-2017-8779	Nessus	Misc.	8/19/2025	8/19/2025	high
289983	MiracleLinux 7 : rpcbind-0.2.0-38.0.1.el7.AXS7 (AXSA:2017-1656:01)	Nessus	Miracle Linux Local Security Checks	1/16/2026	1/16/2026	high
290132	MiracleLinux 7 : libtirpc-0.2.4-0.8.0.1.el7.AXS7 (AXSA:2017-1681:01)	Nessus	Miracle Linux Local Security Checks	1/16/2026	1/16/2026	high

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