CVE-2020-27788

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-27788
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-27788.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-27788
Downstream
Published
2022-08-18T20:15:08Z
Modified
2025-09-16T07:11:13.838437Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of plxelf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.

References

Affected packages

Debian:11 / upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/debian/upx-ucl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.96-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

Debian:13 / upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/debian/upx-ucl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.96-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

Debian:14 / upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/debian/upx-ucl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.96-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

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
1bb93d4fce9f1d764ba57bf5ac154af515b3fc83

Affected versions

v1.*

v1.10
v1.11
v1.90
v1.91
v1.92
v1.93
v1.94
v1.95
v1.96

v2.*

v2.00
v2.01
v2.90
v2.91
v2.92
v2.93

v3.*

v3.00
v3.01
v3.02
v3.03
v3.04
v3.05
v3.06
v3.07
v3.08
v3.09
v3.91
v3.92
v3.93
v3.94
v3.95

Database specific 

{
    "vanir_signatures": [
        {
            "digest": {
                "length": 10638.0,
                "function_hash": "151185809428527722139195468283067464036"
            },
            "deprecated": false,
            "signature_version": "v1",
            "id": "CVE-2020-27788-0b76053e",
            "target": {
                "function": "PackLinuxElf32::canPack",
                "file": "src/p_lx_elf.cpp"
            },
            "source": "https://github.com/upx/upx/commit/1bb93d4fce9f1d764ba57bf5ac154af515b3fc83",
            "signature_type": "Function"
        },
        {
            "digest": {
                "length": 9181.0,
                "function_hash": "167713624437359543478701988430981518868"
            },
            "deprecated": false,
            "signature_version": "v1",
            "id": "CVE-2020-27788-28e2fc61",
            "target": {
                "function": "PackLinuxElf64::canPack",
                "file": "src/p_lx_elf.cpp"
            },
            "source": "https://github.com/upx/upx/commit/1bb93d4fce9f1d764ba57bf5ac154af515b3fc83",
            "signature_type": "Function"
        },
        {
            "digest": {
                "line_hashes": [
                    "82204206008690361854362666745483772762",
                    "146337883991646778533533671510182923041",
                    "113781826776723822040192522040459030607",
                    "119719493737525636567212474936345438799",
                    "212306472503360752631373549545311537706",
                    "215296202042475403213892820095272079781",
                    "195177008081007374364685174425345771296",
                    "225733359486523670131980833535423497494",
                    "21655068984884843147063041982638797859",
                    "48473761488894269526620175745591509550",
                    "303907887036440362275675322814852535086",
                    "119719493737525636567212474936345438799",
                    "212306472503360752631373549545311537706",
                    "215296202042475403213892820095272079781",
                    "195177008081007374364685174425345771296",
                    "225733359486523670131980833535423497494"
                ],
                "threshold": 0.9
            },
            "deprecated": false,
            "signature_version": "v1",
            "id": "CVE-2020-27788-cc616e44",
            "target": {
                "file": "src/p_lx_elf.cpp"
            },
            "source": "https://github.com/upx/upx/commit/1bb93d4fce9f1d764ba57bf5ac154af515b3fc83",
            "signature_type": "Line"
        }
    ]
}