Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rpcbind Project | Rpcbind | <= 0.2.4 |
| Libtirpc Project | Libtirpc | <= 1.0.1 |
| Ntirpc Project | Ntirpc | <= 1.4.3 |
Related Weaknesses (CWE)
References
- http://openwall.com/lists/oss-security/2017/05/03/12Mailing ListPatchThird Party Advisory
- http://openwall.com/lists/oss-security/2017/05/04/1Mailing ListPatchThird Party Advisory
- http://www.debian.org/security/2017/dsa-3845
- http://www.securityfocus.com/bid/98325Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038532
- https://access.redhat.com/errata/RHBA-2017:1497
- https://access.redhat.com/errata/RHSA-2017:1262
- https://access.redhat.com/errata/RHSA-2017:1263
- https://access.redhat.com/errata/RHSA-2017:1267
- https://access.redhat.com/errata/RHSA-2017:1268
- https://access.redhat.com/errata/RHSA-2017:1395
- https://github.com/drbothen/GO-RPCBOMBIssue TrackingPatchThird Party Advisory
- https://github.com/guidovranken/rpcbomb/Issue TrackingPatchThird Party Advisory
- https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-sThird Party Advisory
- https://security.gentoo.org/glsa/201706-07
FAQ
What is CVE-2017-8779?
CVE-2017-8779 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2017-8779?
CVE-2017-8779 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-8779?
Check the references section above for vendor advisories and patch information. Affected products include: Rpcbind Project Rpcbind, Libtirpc Project Libtirpc, Ntirpc Project Ntirpc.