CVE-2018-5538 describes a low-severity vulnerability in F5 BIG-IP DNS, Global Traffic Manager, Link Controller, and Local Traffic Manager versions 13.1.0-13.1.0.7 and 12.1.3-12.1.3.5. When the "dnsexpress.notifyport" database variable is non-default, these products improperly accept DNS NOTIFY messages on the management interface from unauthorized source IP addresses, bypassing the 'Allow NOTIFY From' configuration. This vulnerability has a CVSSv3 score of 3.7 (LOW), indicating a network-based attack with high attack complexity and a low impact on integrity, but no impact on confidentiality or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 12.1.3, <= 12.1.3.5CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* | ||
> 13.1.0, <= 13.1.0.7CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* | ||
>= 12.1.3, <= 12.1.3.5CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* | ||
>= 13.1.0, <= 13.1.0.7CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* | ||
>= 12.1.3, <= 12.1.3.5CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.