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CVE-2023-3748
Disclosed 2023-07-24
Description
A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This issue may allow an attacker to send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to enter an infinite loop and cause a denial of service.
Severity & CVSS Score
3.5
LOW
CVSS 3.1
Attack Vector
Adjacent network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
| CWE-ID | Name |
|---|---|
| CWE-835 | Loop with Unreachable Exit Condition ('Infinite Loop') |
References
| URL | Source |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-3748 | Red Hat |
| https://bugzilla.redhat.com/show_bug.cgi?id=2223668 | Red Hat |
Git Fixes
- ae1e0e1fed77716bc06f181ad68c4433fb5523d0
- 0a95d121ca8e1f43d41d952d6c82d111ca850085
- 7b915204c1ad64064f50e9aebf34940dd1f3d70d
Raw Data
- CVE-2023-3748.cve.json — CVE record (JSON)
- CVE-2023-3748.frr.json — FRR-specific data (JSON)