Home/CVE/A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This i
CVE

CVE-2023-3748

A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This i

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.

LOW · CVSS 3.5 EPSS 0.00073
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
▤

Affected Products & Versions

1
frrouting< 8.5
▣

Scoring & Timeline

3.5
LOW · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Jul 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

4
suse-csafSUSE-SU-2024:4090-1
suse-csafopenSUSE-SU-2024:13191-1
suse-csafSUSE-SU-2023:3709-1
usnUSN-6240-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-3748Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2223668Issue TrackingThird Party Advisory
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