Resource exhaustion in Libtirpc Project
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.812 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.801 · newest: 0.812 · change: +0.011
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3759-2/ (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:1267 (vendor-advisory)
- usn.ubuntu.com/3759-1/ (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:1262 (vendor-advisory)
- guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-… (Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:1268 (vendor-advisory)
- github.com/drbothen/GO-RPCBOMB (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHBA-2017:1497 (vendor-advisory)
- github.com/guidovranken/rpcbomb/ (Patch, Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20180109-0001/
Frequently asked questions
- What is CVE-2017-8779?
- CVE-2017-8779 is a high-severity vulnerability in Libtirpc Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2017-05-04.
- How severe is CVE-2017-8779?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-8779 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.