rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC…
Priority HIGH 73CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-770.
Summary
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.
Why it matters now
EPSS 0.8123 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Red Hat: 5 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rpcbind_project:rpcbind:*:*:*:*:*:*:*:* | up to 0.2.4 | Vulnerable | Rpcbind Project |
| cpe:2.3:a:libtirpc_project:libtirpc:*:*:*:*:*:*:*:* | up to 1.0.1 | Vulnerable | Libtirpc Project |
| cpe:2.3:a:ntirpc_project:ntirpc:*:*:*:*:*:*:*:* | up to 1.4.3 | Vulnerable | Ntirpc Project |
- cpe:2.3:a:rpcbind_project:rpcbind:*:*:*:*:*:*:*:* Versions up to 0.2.4 Vulnerable ·Rpcbind Project
- cpe:2.3:a:libtirpc_project:libtirpc:*:*:*:*:*:*:*:* Versions up to 1.0.1 Vulnerable ·Libtirpc Project
- cpe:2.3:a:ntirpc_project:ntirpc:*:*:*:*:*:*:*:* Versions up to 1.4.3 Vulnerable ·Ntirpc Project
Remediation
Red Hat 5 advisories
- RHSA-2017:1395 Released 2017-06-06 · Red Hat rating Importantlibntirpc security update
- Red Hat Gluster Storage NFS 3.2 on RHEL-6 libntirpc-1.4.3-4.el6rhs, libntirpc-devel-1.4.3-4.el6rhs
- Red Hat Gluster Storage NFS 3.2 on RHEL-7 libntirpc-1.4.3-4.el7rhgs, libntirpc-devel-1.4.3-4.el7rhgs
- RHSA-2017:1268 Released 2017-05-23 · Red Hat rating Importantlibtirpc security update
- Red Hat Enterprise Linux Desktop (v. 6) libtirpc-0.2.1-13.el6_9
- Red Hat Enterprise Linux Desktop Optional (v. 6) libtirpc-devel-0.2.1-13.el6_9
- Red Hat Enterprise Linux HPC Node (v. 6) libtirpc-0.2.1-13.el6_9
- Red Hat Enterprise Linux HPC Node Optional (v. 6) libtirpc-devel-0.2.1-13.el6_9
- Red Hat Enterprise Linux Server (v. 6) libtirpc-0.2.1-13.el6_9, libtirpc-0.2.1-13.el6_9.ppc
- Red Hat Enterprise Linux Server Optional (v. 6) libtirpc-devel-0.2.1-13.el6_9, libtirpc-devel-0.2.1-13.el6_9.ppc
- Red Hat Enterprise Linux Workstation (v. 6) libtirpc-0.2.1-13.el6_9
- Red Hat Enterprise Linux Workstation Optional (v. 6) libtirpc-devel-0.2.1-13.el6_9
- RHSA-2017:1267 Released 2017-05-23 · Red Hat rating Importantrpcbind security update
- Red Hat Enterprise Linux Desktop (v. 6) rpcbind-0.2.0-13.el6_9
- Red Hat Enterprise Linux HPC Node (v. 6) rpcbind-0.2.0-13.el6_9
- Red Hat Enterprise Linux Server (v. 6) rpcbind-0.2.0-13.el6_9
- Red Hat Enterprise Linux Workstation (v. 6) rpcbind-0.2.0-13.el6_9
Show 2 more Red Hat advisories
- RHSA-2017:1263 Released 2017-05-22 · Red Hat rating Importantlibtirpc security update
- Red Hat Enterprise Linux Client (v. 7) libtirpc-0.2.4-0.8.el7_3
- Red Hat Enterprise Linux Client Optional (v. 7) libtirpc-devel-0.2.4-0.8.el7_3
- Red Hat Enterprise Linux ComputeNode (v. 7) libtirpc-0.2.4-0.8.el7_3
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libtirpc-devel-0.2.4-0.8.el7_3
- Red Hat Enterprise Linux Server (v. 7) libtirpc-0.2.4-0.8.el7_3, libtirpc-0.2.4-0.8.el7_3.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) libtirpc-devel-0.2.4-0.8.el7_3, libtirpc-devel-0.2.4-0.8.el7_3.ppc
- Red Hat Enterprise Linux Workstation (v. 7) libtirpc-0.2.4-0.8.el7_3
- Red Hat Enterprise Linux Workstation Optional (v. 7) libtirpc-devel-0.2.4-0.8.el7_3
- RHSA-2017:1262 Released 2017-05-22 · Red Hat rating Importantrpcbind security update
- Red Hat Enterprise Linux Client (v. 7) rpcbind-0.2.0-38.el7_3
- Red Hat Enterprise Linux ComputeNode (v. 7) rpcbind-0.2.0-38.el7_3
- Red Hat Enterprise Linux Server (v. 7) rpcbind-0.2.0-38.el7_3
- Red Hat Enterprise Linux Workstation (v. 7) rpcbind-0.2.0-38.el7_3
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage MON 2 | Fixed | — |
| Red Hat Ceph Storage OSD 2 | Fixed | — |
| Red Hat Ceph Storage Tools 2 | Fixed | — |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2017:1262, RHSA-2017:1263 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2017:1263 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2017:1262, RHSA-2017:1263 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2017:1263 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2017:1267, RHSA-2017:1268 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2017:1268 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2017:1267, RHSA-2017:1268 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2017:1268 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2017:1267, RHSA-2017:1268 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2017:1262, RHSA-2017:1263 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2017:1268 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2017:1263 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2017:1267, RHSA-2017:1268 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2017:1262, RHSA-2017:1263 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2017:1268 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2017:1263 |
| Red Hat Gluster Storage NFS 3.2 on RHEL-6 | Fixed | RHSA-2017:1395 |
| Red Hat Gluster Storage NFS 3.2 on RHEL-7 | Fixed | RHSA-2017:1395 |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8779
- 2026-10-03 Alias added: GHSA-fr7x-wc8q-h255
References
Exploit 1
Patch 4
Advisory 11
Sources
- CVE-2017-8779 · CVE Program
- CVE-2017-8779 · NVD
- FIRST EPSS
- GHSA-fr7x-wc8q-h255 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-8779 · Red Hat security data · CC BY 4.0
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