ubuntu-cve-2023-23456
Vulnerability from osv_ubuntu
Published
2023-01-12 19:15
Modified
2026-05-20 15:02
Summary
Details
A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.
Severity
5.3 (Medium)
5.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "upx-ucl",
"binary_version": "4.2.2-3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "upx-ucl",
"purl": "pkg:deb/ubuntu/upx-ucl@4.2.2-3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.96-3",
"4.2.2-3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "upx-ucl",
"binary_version": "4.2.4-1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "upx-ucl",
"purl": "pkg:deb/ubuntu/upx-ucl@4.2.4-1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.2.4-1",
"4.2.4-1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "upx-ucl",
"binary_version": "4.2.4-1.1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "upx-ucl",
"purl": "pkg:deb/ubuntu/upx-ucl@4.2.4-1.1build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.2.4-1.1",
"4.2.4-1.1build1"
]
}
],
"aliases": [],
"details": "A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.",
"id": "UBUNTU-CVE-2023-23456",
"modified": "2026-05-20T15:02:28Z",
"published": "2023-01-12T19:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-23456"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2160381"
},
{
"type": "REPORT",
"url": "https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4"
},
{
"type": "REPORT",
"url": "https://github.com/upx/upx/issues/632"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-23456"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2023-23456"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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