Vulnerability Description
"deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Isc | Bind | >= 9.7.0, < 9.8.8 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Debian | Debian Linux | 8.0 |
| Netapp | Data Ontap Edge | - |
| Canonical | Ubuntu Linux | 12.04 |
| Hp | Hp-Ux | - |
| Opensuse | Leap | 15.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.htmlMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/105055Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041436Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:2570Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2571Third Party Advisory
- https://kb.isc.org/docs/aa-01639Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00033.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00001.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201903-13Third Party Advisory
- https://security.netapp.com/advisory/ntap-20180926-0003/Third Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpeThird Party Advisory
- https://usn.ubuntu.com/3769-1/Third Party Advisory
- https://usn.ubuntu.com/3769-2/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2018-5740?
CVE-2018-5740 is a vulnerability with a CVSS score of 7.5 (HIGH). "deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used ...
How severe is CVE-2018-5740?
CVE-2018-5740 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-2018-5740?
Check the references section above for vendor advisories and patch information. Affected products include: Isc Bind, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus.