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    CVE-2023-3748

    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.

    Published:Apr 15, 2023
    Last Modified:Nov 21, 2024
    EPS:Jul 24, 2023
    EPSS Score:0.0002
    CVSS Score:3.5

    Affected Products

    Vendor
    Frrouting
    Product
    Frrouting
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-37460 (CVSS 7.5) — Missing input validation in the rfapiRibBi2Ri() function (rfapi_rib.c) of FRRouting (FRR) stable/10.0 to stabl…
    CVE-2026-37459 (CVSS 7.5) — An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Servi…
    CVE-2026-37458 (CVSS 6.5) — Missing input validation in the MP_REACH_NLRI component of FRRouting (FRR) stable/10.0 to stable/10.6 allows a…
    CVE-2026-37457 (CVSS 7.5) — An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_ut…
    CVE-2026-28532 (CVSS 6) — FRRouting before 10.5.3 contains an integer overflow vulnerability in seven OSPF Traffic Engineering and Segme…
    CVE-2026-5107 (CVSS 2.3) — A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of…
    CVE-2025-61103 (CVSS 7.5) — FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_…
    CVE-2025-61106 (CVSS 7.5) — FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_…
    CVE-2025-61104 (CVSS 7.5) — FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_…
    CVE-2025-61107 (CVSS 7.5) — FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High