CVE-2018-5740
bind9 - security update
7.5
HIGH
CVSS 3.1
EPSS 59.4%
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.
How to fix CVE-2018-5740
To remediate CVE-2018-5740, upgrade the affected package to a fixed version below.
- —upgrade to 9.12.2_p1-r0 or later
Is CVE-2018-5740 being exploited?
Likely — EPSS is 59.4%, placing CVE-2018-5740 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- >= 9.7.0, < 9.12.2_p1-r0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |