CVE-2021-30500

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-30500
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-30500.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-30500
Downstream
Related
Published
2021-05-27T00:15:08Z
Modified
2025-08-09T20:01:26Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in plxelf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.

References

Affected packages

Git / github.com/upx/upx

Affected ranges

Type
GIT
Repo
https://github.com/upx/upx
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
90279abdfcd235172eab99651043051188938dcc

Database specific 

{
    "vanir_signatures": [
        {
            "signature_version": "v1",
            "deprecated": false,
            "target": {
                "file": "src/p_lx_elf.cpp",
                "function": "PackLinuxElf32::canUnpack"
            },
            "source": "https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc",
            "digest": {
                "length": 187.0,
                "function_hash": "195659927832214189917620206032031836622"
            },
            "signature_type": "Function",
            "id": "CVE-2021-30500-1db58217"
        },
        {
            "signature_version": "v1",
            "deprecated": false,
            "target": {
                "file": "src/p_lx_elf.cpp",
                "function": "PackLinuxElf64::canUnpack"
            },
            "source": "https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc",
            "digest": {
                "length": 678.0,
                "function_hash": "297660809110354721268824656352953698232"
            },
            "signature_type": "Function",
            "id": "CVE-2021-30500-a331cfa2"
        },
        {
            "signature_version": "v1",
            "deprecated": false,
            "target": {
                "file": "src/p_lx_elf.cpp"
            },
            "source": "https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc",
            "digest": {
                "line_hashes": [
                    "67808947422885382892001242696481940408",
                    "248774463811149992663541651901235319961",
                    "86334854398016093809039749763893135532",
                    "317261114776454577962241975778966464315",
                    "54005563392294180897993548789785126937",
                    "245740544534781845508031889732424515074",
                    "272111553269849423416259819047661130422",
                    "213855792622867085735299794779365703227",
                    "216478141590148980457976540764247459929",
                    "274930623838235982655322564949524819121",
                    "47113020994492468516410760695982302936",
                    "86334854398016093809039749763893135532",
                    "107370910835469206454149122140010260115",
                    "255830532206859043250869008652145294010",
                    "74292198608600530625601120046048391471",
                    "98584086108833330075633664089875600274",
                    "25965964887037125459983560885222598586",
                    "282492245537366763669467335669003515783"
                ],
                "threshold": 0.9
            },
            "signature_type": "Line",
            "id": "CVE-2021-30500-e010c96c"
        }
    ]
}