CVE-2021-43612

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-43612
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43612.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-43612
Downstream
Related
Published
2023-04-15T22:15:07Z
Modified
2025-09-19T13:27:24.107392Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

References

Affected packages

Git / github.com/lldpd/lldpd

Affected ranges

Type
GIT
Repo
https://github.com/lldpd/lldpd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
73d42680fce8598324364dbb31b9bc3b8320adf7
Type
GIT
Repo
https://github.com/vincentbernat/lldpd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9576b78ec445b6570763deb93f0de8e68ba77f7e

Affected versions

0.*

0.2
0.2.1
0.3
0.3.1
0.3.2
0.4.0
0.5.0
0.5.1
0.5.2
0.5.4
0.5.5
0.6.0
0.6.1
0.7.0
0.7.1
0.7.10
0.7.11
0.7.12
0.7.13
0.7.14
0.7.15
0.7.16
0.7.2
0.7.3
0.7.4
0.7.5
0.7.6
0.7.7
0.7.8
0.7.9
0.8.0
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9

1.*

1.0.0
1.0.1
1.0.10
1.0.11
1.0.12
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9

Database specific 

{
    "vanir_signatures": [
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "174270931191069446119922332806983027230",
                    "328953425429319740967359908202123365019",
                    "148474301713841057780854757599060454972",
                    "303472043700785910045862048403819654472"
                ]
            },
            "id": "CVE-2021-43612-3f142231",
            "source": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7",
            "signature_version": "v1",
            "signature_type": "Line",
            "target": {
                "file": "src/daemon/protocols/sonmp.c"
            },
            "deprecated": false
        },
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "123919934963719850177372057111646982388",
                    "85242646061938928223557171248857657613",
                    "290398165181504468760796425243008171327",
                    "73400390999848461393684333828551772347",
                    "66224003795423317515501178359389502228",
                    "263998930456032330990528442924748879102",
                    "134033607636796134223854940512835876482",
                    "150652448467631310759880651304122297814",
                    "75008514573464950100949670934350687236",
                    "121758378453464247567102532326677508342",
                    "99856463810497114028292624778359719239",
                    "91295583977985738032834828095236946141",
                    "121648892500187250039971799308710356741",
                    "284151098791119388058347318805540286132",
                    "42095772248954819309628834884020855252",
                    "182881045688165871448594777995178323541"
                ]
            },
            "id": "CVE-2021-43612-be4181ed",
            "source": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7",
            "signature_version": "v1",
            "signature_type": "Line",
            "target": {
                "file": "tests/check_sonmp.c"
            },
            "deprecated": false
        },
        {
            "digest": {
                "function_hash": "8385375709133268312520587891129635825",
                "length": 1710.0
            },
            "id": "CVE-2021-43612-ce80cd72",
            "source": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7",
            "signature_version": "v1",
            "signature_type": "Function",
            "target": {
                "file": "tests/check_sonmp.c",
                "function": "START_TEST"
            },
            "deprecated": false
        },
        {
            "digest": {
                "function_hash": "31357405704987458856179538394491194529",
                "length": 3756.0
            },
            "id": "CVE-2021-43612-f8222931",
            "source": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7",
            "signature_version": "v1",
            "signature_type": "Function",
            "target": {
                "file": "src/daemon/protocols/sonmp.c",
                "function": "sonmp_decode"
            },
            "deprecated": false
        }
    ]
}