CVE-2019-19334

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Source
https://cve.org/CVERecord?id=CVE-2019-19334
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19334.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-19334
Downstream
Published
2019-12-06T16:15:10.920Z
Modified
2026-03-14T04:43:06.123122Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "identityref". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.

References

Affected packages

Git / github.com/cesnet/libyang

Affected ranges

Type
GIT
Repo
https://github.com/cesnet/libyang
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
14a95280b2bd77b5fd1d9b5f8af71b15679f1a8f
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
ebcf465b4250c869eeb727e64b0caa419ba15465
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
4ebd79ec4fc92f7989e45532abc55ef6593b60aa
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
7e811613b335afc8e1b2c0ee77e7b3f371bc9175
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
ca88008d7068eaefd9cc04b18a523283dae3561e
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
0ee330494a94ada40da59ad6037fd3138fe8ec9a
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
5ccd6dea3eb7256dbc835507d7253eb5596c31b2
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
054ed1fcd480dc4130d98206548c8fe1ac512356
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
13b20f94f080cc493b3fd22604d0635585194231
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
2ec826a984204d034f43a7ad72d835bc99974ede
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
9e316f344e73316bf058ef88bd5ba852ad65ba25
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
a3e312c65573d90dd5bedf0744e473a9bbd2ece3
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
347246611b85e05d16f54faaa5697c4b2ee4b468
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
3defd82abbdc082b947343e9e7e78952144f39a5
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
64248ec90179740e66416c78e0b3b914a8a07d30
Fixed
6980afae2ff9fcd6d67508b0a3f694d75fd059d6
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.11-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.11-r2"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.12-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.12-r2"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.13-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.13-r2"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.14-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.15-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.16-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.16-r2"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.16-r3"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.0-r1"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.0-r2"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.0-r3"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.0-r4"
        }
    ]
}

Affected versions

v0.*
v0.11-r1
v0.11-r2
v0.12-r1
v0.12-r2
v0.13-r1
v0.13-r2
v0.14-r1
v0.15-r1
v0.16-r1
v0.16-r2
v0.16-r3
v1.*
v1.0-r1
v1.0-r2
v1.0-r3
v1.0-r4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19334.json"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "31"
            }
        ]
    }
]
vanir_signatures 
[
    {
        "deprecated": false,
        "signature_type": "Line",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "292995609282841363669975935046566204682",
                "149517033522983099106477072070701937564",
                "297297297624460440254951196547675551567",
                "72996930533404138982397399557811059557",
                "274334248161745766359455477880545863750",
                "199060229445835364465972116034786537046"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/cesnet/libyang/commit/6980afae2ff9fcd6d67508b0a3f694d75fd059d6",
        "id": "CVE-2019-19334-0fc85d57",
        "target": {
            "file": "src/parser.c"
        }
    },
    {
        "deprecated": false,
        "signature_type": "Function",
        "signature_version": "v1",
        "digest": {
            "function_hash": "264754062392839519042860666898880122305",
            "length": 3550.0
        },
        "source": "https://github.com/cesnet/libyang/commit/6980afae2ff9fcd6d67508b0a3f694d75fd059d6",
        "id": "CVE-2019-19334-8e9f3d59",
        "target": {
            "file": "src/parser.c",
            "function": "make_canonical"
        }
    }
]