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.

The remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6322 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6322-1                   security@debian.org     https://www.debian.org/security/                                  Aron Xu     June 05, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : frr     CVE ID         : CVE-2023-3748 CVE-2024-27913 CVE-2024-31950 CVE-2024-31951                      CVE-2024-34088 CVE-2025-61099 CVE-2025-61100 CVE-2025-61101                      CVE-2025-61102 CVE-2025-61103 CVE-2025-61104 CVE-2025-61105                      CVE-2025-61106 CVE-2025-61107 CVE-2026-5107 CVE-2026-28532                      CVE-2026-37457 CVE-2026-37458     Debian Bug     :

    Several vulnerabilities were discovered in FRRouting (frr), a suite of     internet routing protocol daemons. A remote attacker could trigger these     issues by sending specially crafted protocol packets to a vulnerable     daemon, resulting in denial of service (infinite loops, NULL pointer     dereferences and crashes) or potentially the execution of arbitrary code     through out-of-bounds reads and writes and buffer overflows. The flaws     affect packet and attribute parsing in the BGP daemon (including FlowSpec,     EVPN/VNC NLRI and MP_REACH_NLRI handling), the OSPF daemon (Traffic     Engineering, Segment Routing and Opaque LSA processing) and the babeld     daemon.

    For the oldstable distribution (bookworm), these problems have been fixed     in version 8.4.4-1.1~deb12u2.

    For the stable distribution (trixie), these problems have been fixed in     version 10.3-3+deb13u1.

    We recommend that you upgrade your frr packages.

    For the detailed security status of frr please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/frr

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0036 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-38406:
    bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a flowspec     overflow.

    CVE-2023-38407:
    bgpd/bgp_label.c in FRRouting (FRR) before 8.5 attempts to read beyond the end of the stream during     labeled unicast parsing.

    CVE-2023-38802:
    FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of     service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation).

    CVE-2023-41358:
    An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c processes NLRIs if the attribute     length is zero.

    CVE-2023-41359:
    An issue was discovered in FRRouting FRR through 9.0. There is an out-of-bounds read in     bgp_attr_aigp_valid in bgpd/bgp_attr.c because there is no check for the availability of two bytes during     AIGP validation.

    CVE-2023-41360:
    An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c can read the initial byte of the     ORF header in an ahead-of-stream situation.

    CVE-2023-41361:
    An issue was discovered in FRRouting FRR 9.0. bgpd/bgp_open.c does not check for an overly large length of     the rcv software version.

    CVE-2023-41909:
    An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c     processes malformed requests with no attributes, leading to a NULL pointer dereference.

    CVE-2023-46752:
    An issue was discovered in FRRouting FRR through 9.0.1. It mishandles malformed MP_REACH_NLRI data,     leading to a crash.

    CVE-2023-46753:
    An issue was discovered in FRRouting FRR through 9.0.1. A crash can occur for a crafted BGP UPDATE message     without mandatory attributes, e.g., one with only an unknown transit attribute.

    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.

    CVE-2023-31490:
    An issue found in Frrouting bgpd v.8.4.2 allows a remote attacker to cause a denial of service via the     bgp_attr_psid_sub() function.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:4090-1 advisory.

    Update to frr 8.5.6 (jsc#PED-PED-11092) including fixes for:

    - CVE-2024-44070,CVE-2024-34088,CVE-2024-31951,CVE-2024-31950,       CVE-2024-31948,CVE-2024-27913,CVE-2023-47235,CVE-2023-47234,       CVE-2023-46753,CVE-2023-46752,CVE-2023-41909,CVE-2023-41360,       CVE-2023-41358,CVE-2023-38802,CVE-2023-38407,CVE-2023-38406,       CVE-2023-3748,CVE-2023-31490,CVE-2023-31489 and other bugfixes.
      See https://frrouting.org/release/8.5.6/ for details.

    The most recent frr 8.x series provides several new features,     improvements and bug fixes for various protocols and daemons,     especially for PIM/PIMv6/BGP and VRF support.

    See https://frrouting.org/release/8.5/ for details and links.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:3709-1 advisory.

  - 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. (CVE-2023-3748)

  - FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of     service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation). (CVE-2023-38802)

  - An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c processes NLRIs if the attribute     length is zero. (CVE-2023-41358)

  - An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c can read the initial byte of the     ORF header in an ahead-of-stream situation. (CVE-2023-41360)

  - An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c     processes malformed requests with no attributes, leading to a NULL pointer dereference. (CVE-2023-41909)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 23.04 host has packages installed that are affected by a vulnerability as referenced in the USN-6240-1 advisory.

    It was discovered that FRR incorrectly handled certain messages. An attacker could possibly use this issue     to cause a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
318679	Debian dsa-6322 : frr - security update	Nessus	Debian Local Security Checks	low
239889	TencentOS Server 4: frr (TSSA-2024:0036)	Nessus	Tencent Local Security Checks	critical
212585	SUSE SLES15 / openSUSE 15 Security Update : frr (SUSE-SU-2024:4090-1)	Nessus	SuSE Local Security Checks	critical
181739	SUSE SLES15 / openSUSE 15 Security Update : frr (SUSE-SU-2023:3709-1)	Nessus	SuSE Local Security Checks	critical
178749	Ubuntu 23.04 : FRR vulnerability (USN-6240-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2023-3748

high

Tenable Plugins

low

critical

critical

critical

high