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
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.
- Published
- May 4, 2017
- Updated
- Jun 16, 2026
- EPSS
- 81.2% · 100th percentile
- CWE
- CWE-770
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
54
Plan
Add it to your regular patch cycle.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 24 / 30 · 81.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| rpcbind project | rpcbind | cpe:2.3:a:rpcbind_project:rpcbind |
| libtirpc project | libtirpc | cpe:2.3:a:libtirpc_project:libtirpc |
| ntirpc project | ntirpc | cpe:2.3:a:ntirpc_project:ntirpc |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- libtirpc project libtirpcup to 1.0.1 inclusive
- ntirpc project ntirpcup to 1.4.3 inclusive
- rpcbind project rpcbindup to 0.2.4 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.10 | rpcbind | before 0.2.4-r0 | 0.2.4-r0 |
| Debian:12 | libtirpc | before 0.2.5-1.2 | 0.2.5-1.2 |
| Debian:12 | ntirpc | before 1.4.4-1 | 1.4.4-1 |
| Debian:12 | rpcbind | before 0.2.3-0.6 | 0.2.3-0.6 |
| Debian:7 | libtirpc | before 0.2.2-5+deb7u1 | 0.2.2-5+deb7u1 |
| Debian:7 | rpcbind | before 0.2.0-8+deb7u2 | 0.2.0-8+deb7u2 |
| Debian:8 | libtirpc | before 0.2.5-1+deb8u1 | 0.2.5-1+deb8u1 |
| Debian:8 | rpcbind | before 0.2.1-6+deb8u2 | 0.2.1-6+deb8u2 |
| openSUSE:Tumbleweed | rpcbind | before 1.2.6-2.2 | 1.2.6-2.2 |
| Red Hat:ceph_storage:2::el7 | calamari-server | before 0:1.5.6-2.el7cp | 0:1.5.6-2.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-base | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-common | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-fuse | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-iscsi-cli | before 0:2.0-5.el7cp | 0:2.0-5.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-iscsi-config | before 0:2.0-4.el7cp | 0:2.0-4.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-iscsi-tools | before 0:2.0-3.el7cp | 0:2.0-3.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-mds | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-mon | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-osd | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-radosgw | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-selinux | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | ceph-test | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
| Red Hat:ceph_storage:2::el7 | libcephfs1 | before 1:10.2.7-27.el7cp | 1:10.2.7-27.el7cp |
+52
Same product
rpcbind project: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-7236Use-after-free vulnerability in xprt_set_caller in rpcb_svc_com.c in rpcbind 0.2.1 and earlier allows remote attackers to cause a denial of 32Monitor
- CVE-2010-2061rpcbind 0.2.0 does not properly validate (1) /tmp/portmap.xdr and (2) /tmp/rpcbind.xdr, which can be created by an attacker before the daemo31Monitor
- CVE-2010-2064rpcbind 0.2.0 allows local users to write to arbitrary files or gain privileges via a symlink attack on (1) /tmp/portmap.xdr and (2) /tmp/rp28Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:rpcbind | 0.2.4-r0 · Alpine:v3.10 | Package registry (OSV) |
| debian:libtirpc | 0.2.5-1.2 · Debian:12 | Package registry (OSV) |
| debian:ntirpc | 1.4.4-1 · Debian:12 | Package registry (OSV) |
| debian:rpcbind | 0.2.3-0.6 · Debian:12 | Package registry (OSV) |
| opensuse:rpcbind | 1.2.6-2.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:ceph | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-base | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-common | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-fuse | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-iscsi-cli | 0:2.0-5.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-iscsi-config | 0:2.0-4.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-iscsi-tools | 0:2.0-3.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-mds | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-radosgw | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:ceph-selinux | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:libcephfs1 | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| red hat:libcephfs1-devel | 1:10.2.7-27.el7cp · Red Hat:ceph_storage:2::el7 | Package registry (OSV) |
| suse:libtirpc | 0.2.3-13.3.1 · SUSE:Linux Enterprise Desktop 12 SP1 | Package registry (OSV) |
| suse:rpcbind | 0.2.3-23.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×1
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2017-05-08 |
| Metasploit module | auxiliary/dos/rpc/rpcbombRPC DoS targeting *nix rpcbind/libtirpcauxiliary | — |
| Proof-of-concept repository on GitHub | stars:4 | 2017-05-09 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+4 d
- TodaySep 30, 2026+3436 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-770 · Allocation of Resources Without Limits or ThrottlingCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- FloodingCAPEC-125likelihood: High · Medium
- Excessive AllocationCAPEC-130likelihood: Medium · Medium
- XML Ping of the DeathCAPEC-147likelihood: Low · Medium
- Exponential Data ExpansionCAPEC-197likelihood: High · Medium
- Serialized Data Parameter BlowupCAPEC-229likelihood: High · High
- Serialized Data with Nested PayloadsCAPEC-230likelihood: Medium · High
- Oversized Serialized Data PayloadsCAPEC-231likelihood: Medium · High
- HTTP DoSCAPEC-469Low
ATT&CK techniques
- Network Denial of Service:Direct Network FloodT1498.001
- Network Denial of Service:Reflection AmplificationT1498.002
- Endpoint Denial of ServiceT1499
- Endpoint Denial of Service: OS Exhaustion FloodT1499.001
- Endpoint Denial of Service:Service Exhaustion FloodT1499.002
- Endpoint Denial of Service:Application Exhaustion FloodT1499.003
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- openwall.com/lists/oss-security/2017/05/03/12
- openwall.com/lists/oss-security/2017/05/04/1
- www.debian.org/security/2017/dsa-3845
- www.securityfocus.com/bid/98325
- www.securitytracker.com/id/1038532
- access.redhat.com/errata/RHBA-2017:1497
- access.redhat.com/errata/RHSA-2017:1262
- access.redhat.com/errata/RHSA-2017:1263
- access.redhat.com/errata/RHSA-2017:1267
- access.redhat.com/errata/RHSA-2017:1268
- access.redhat.com/errata/RHSA-2017:1395
- github.com/drbothen/GO-RPCBOMB
- github.com/guidovranken/rpcbomb/
- guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/
- security.gentoo.org/glsa/201706-07
- security.netapp.com/advisory/ntap-20180109-0001/
- usn.ubuntu.com/3759-1/
- usn.ubuntu.com/3759-2/
- www.exploit-db.com/exploits/41974/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.