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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libtirpc | 0.2.5-1.2 | — |
| Debian 14 | ntirpc | 1.4.4-1 | — |
| Debian 14 | rpcbind | 0.2.3-0.6 | — |
| Debian 13 | libtirpc | 0.2.5-1.2 | — |
| Debian 13 | ntirpc | 1.4.4-1 | — |
| Debian 13 | rpcbind | 0.2.3-0.6 | — |
| Debian 12 | libtirpc | 0.2.5-1.2 | — |
| Debian 12 | ntirpc | 1.4.4-1 | — |
| Debian 12 | rpcbind | 0.2.3-0.6 | — |
| Debian 8 | libtirpc | 0.2.5-1+deb8u1 | DSA-3845-1 |
| Debian 8 | rpcbind | 0.2.1-6+deb8u2 | DSA-3845-1 |
| Debian 7 | libtirpc | 0.2.2-5+deb7u1 | DLA-936-1 |
| Debian 7 | rpcbind | 0.2.0-8+deb7u2 | DLA-937-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libtirpc | 0.2.5-1.2ubuntu0.1 | USN-3759-1 |
| Ubuntu 18.04 LTS | rpcbind | 0.2.3-0.6ubuntu0.18.04.2 | USN-4986-1 |
| Ubuntu 16.04 LTS | libtirpc | 0.2.5-1ubuntu0.1 | USN-3759-1 |
| Ubuntu 16.04 LTS | ntirpc | No fix yet | — |
| Ubuntu 14.04 LTS | libtirpc | 0.2.2-5ubuntu2.1 | USN-3759-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | rpcbind | 0.2.3-0.2ubuntu0.16.04.1+esm1 | USN-4986-2 |
| Ubuntu Pro 14.04 LTS | rpcbind | 0.2.1-2ubuntu2.2+esm1 | USN-4986-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | libtirpc +1 | 0.2.4-0.8.el7_3 | RHSA-2017:1263 |
| RHEL 7 | rpcbind | 0.2.0-38.el7_3 | RHSA-2017:1262 |
| RHEL 6 | libtirpc +1 | 0.2.1-13.el6_9 | RHSA-2017:1268 |
| RHEL 6 | rpcbind | 0.2.0-13.el6_9 | RHSA-2017:1267 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Gluster Storage 3 | libntirpc +1 | 1.4.3-4.el6rhs | RHSA-2017:1395 |
| Red Hat Ceph Storage 2 | calamari-server | 1.5.6-2.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | ceph +21 | 1:10.2.7-27.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | ceph-iscsi-cli | 2.0-5.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | ceph-iscsi-config | 2.0-4.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | ceph-iscsi-tools | 2.0-3.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | libntirpc | 1.4.3-2.el7 | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | libtcmu +1 | 1.2.1-0.2.20170104.git3d33566.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | nfs-ganesha +1 | 2.4.5-7.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | pcp-pmda-lio | 1.0-2.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | python-crypto | 2.6.1-1.2.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | python-flask | 1:0.10.1-5.el7 | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | python-itsdangerous | 0.23-1.el7 | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | python-jinja2 | 2.7.2-2.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | python-rtslib | 2.1.fb64-0.1.20170301.git3637171.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | python-werkzeug | 0.9.1-1.el7 | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | targetcli | 2.1.fb47-0.1.20170301.gitf632f38.el7cp | RHBA-2017:1497 |
| Red Hat Ceph Storage 2 | userspace-rcu | 0.7.16-1.el7cp | RHBA-2017:1497 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | libtirpc | 1.0.1-16.1 | SUSE-SU-2017:1314-1 |
| SLES 12 SP2 | rpcbind | 0.2.3-23.1 | SUSE-SU-2017:1328-1 |
| SLES 12 SP1 | libtirpc | 0.2.3-13.3.1 | SUSE-SU-2017:1306-1 |
| SLES 12 SP1 | rpcbind | 0.2.1_rc4-17.3.1 | SUSE-SU-2017:1336-1 |
| SLES 11 SP4 | libtirpc | 0.2.1-1.12.3 | SUSE-SU-2017:1468-1 |
| SLES 11 SP4 | rpcbind | 0.1.6+git20080930-6.27.2 | SUSE-SU-2017:1468-1 |
| SLES 11 SP3 | libtirpc | 0.2.1-1.12.3 | SUSE-SU-2017:1468-1 |
| SLES 11 SP3 | rpcbind | 0.1.6+git20080930-6.27.2 | SUSE-SU-2017:1468-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | libtirpc | 1.0.1-16.1 | SUSE-SU-2017:1314-1 |
| SLES for SAP 12 SP2 | rpcbind | 0.2.3-23.1 | SUSE-SU-2017:1328-1 |
| SLES for SAP 12 SP1 | libtirpc | 0.2.3-13.3.1 | SUSE-SU-2017:1306-1 |
| SLES for SAP 12 SP1 | rpcbind | 0.2.1_rc4-17.3.1 | SUSE-SU-2017:1336-1 |
| SLES for SAP 11 SP4 | libtirpc | 0.2.1-1.12.3 | SUSE-SU-2017:1468-1 |
| SLES for SAP 11 SP4 | rpcbind | 0.1.6+git20080930-6.27.2 | SUSE-SU-2017:1468-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | libtirpc | 0.2.1-1.12.3 | SUSE-SU-2017:1468-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | rpcbind | 0.1.6+git20080930-6.27.2 | SUSE-SU-2017:1468-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rpcbind | 1.2.6-2.2 | openSUSE-SU-2024:11304-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.23 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.22 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.21 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.20 | rpcbind | 0.2.4-r0 | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.18 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.17 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.16 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.15 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.14 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.13 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.12 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.11 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.10 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.9 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.8 | rpcbind | 0.2.4-r0 | — |
| Alpine v3.7 | rpcbind | 0.2.4-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | libtirpc +1 | 0.2.4-0.8.el7_3 | ELSA-2017-1263 |
| Oracle Linux 7 | rpcbind | 0.2.0-38.el7_3 | ELSA-2017-1262 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
RPC DoS targeting *nix rpcbind/libtirpc
auxiliary/dos/rpc/rpcbomb
Exploit-DB 1
- RPCBind / libtirpc - Denial of Service EDB-41974 · dos · May 8, 2017
GitHub 1 repository
-
drbothen/GO-RPCBOMB ★ 4 · May 9, 2017
CVE-2017-8779 aka RPCBomb
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 20
- USN-4986-2 rpcbind vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2017:1395 Red Hat Security Advisory: libntirpc security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1268 Red Hat Security Advisory: libtirpc security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1263 Red Hat Security Advisory: libtirpc security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1267 Red Hat Security Advisory: rpcbind security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1262 Red Hat Security Advisory: rpcbind security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHBA-2017:1497 Red Hat Bug Fix Advisory: Red Hat Ceph Storage 2.3 bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-4986-1 rpcbind vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-3759-1 libtirpc vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-936-1 libtirpc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-937-1 rpcbind - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3845-1 libtirpc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1336-1 Security update for rpcbind SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11304-1 rpcbind-1.2.6-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1306-1 Security update for libtirpc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1468-1 Security update for libtirpc, rpcbind SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1328-1 Security update for rpcbind SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1314-1 Security update for libtirpc SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2017-1262 Important: rpcbind security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 22, 2017
- ELSA-2017-1263 Important: libtirpc security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 22, 2017
References
- USN-3759-2 vendor-advisory
- RHSA-2017:1267 vendor-advisory
- USN-3759-1 vendor-advisory
- RHSA-2017:1262 vendor-advisory
- https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/
- RHSA-2017:1268 vendor-advisory
- https://github.com/drbothen/GO-RPCBOMB
- RHBA-2017:1497 vendor-advisory
- https://github.com/guidovranken/rpcbomb/
- https://security.netapp.com/advisory/ntap-20180109-0001/
- GLSA-201706-07 vendor-advisory
- 1038532 vdb-entry
- 98325 vdb-entry
- http://openwall.com/lists/oss-security/2017/05/03/12
- http://openwall.com/lists/oss-security/2017/05/04/1
- RHSA-2017:1395 vendor-advisory
- RHSA-2017:1263 vendor-advisory
- 41974 exploit
- DSA-3845 vendor-advisory