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…
Noroxi assessment
Priority: This week (action score 60/100)
- A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
- A ready-made attack tool exists and the flaw can be exploited over the network without an account, so priority is at least “This week”.
- Probability of exploitation in the next 30 days: 81.2% (FIRST EPSS); higher than 99.6% of all records.
- 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.
- Fixed version: rpcbind (Alpine:v3.10) 0.2.4-r0; libtirpc (Debian:12) 0.2.5-1.2; ntirpc (Debian:12) 1.4.4-1.
Don’t wait for the next maintenance window. Upgrade to rpcbind (Alpine:v3.10) 0.2.4-r0; libtirpc (Debian:12) 0.2.5-1.2; ntirpc (Debian:12) 1.4.4-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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% · 99th percentile
- CWE
- CWE-770
Report tools
Action score
60
Don’t wait for the next maintenance window.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 24 / 30 · 81.2%
- Ready-made attack tool
- 6 / 60 · floor: at least 60
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Weaponized exploit exists
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| 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…31Monitor
- 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)…28Monitor
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
- TodayNov 14, 2026+3481 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
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
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (17 more)Show less
- 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/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.