ubuntu-cve-2021-40391
Vulnerability from osv_ubuntu
Published
2021-11-19 19:15
Modified
2025-10-24 04:50
Summary
Details
An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). A specially-crafted drill file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
10.0 (Critical)
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gerbv",
"binary_version": "2.6.0-1ubuntu0.14.04.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "gerbv",
"purl": "pkg:deb/ubuntu/gerbv@2.6.0-1ubuntu0.14.04.1~esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.0-1ubuntu0.14.04.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.0-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gerbv",
"binary_version": "2.6.0-1ubuntu0.16.04.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "gerbv",
"purl": "pkg:deb/ubuntu/gerbv@2.6.0-1ubuntu0.16.04.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.0-1ubuntu0.16.04.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.0-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gerbv",
"binary_version": "2.6.1-3ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "gerbv",
"purl": "pkg:deb/ubuntu/gerbv@2.6.1-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.1-3ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.1-2",
"2.6.1-3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gerbv",
"binary_version": "2.7.0-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "gerbv",
"purl": "pkg:deb/ubuntu/gerbv@2.7.0-1ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.7.0-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.7.0-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gerbv",
"binary_version": "2.8.2-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "gerbv",
"purl": "pkg:deb/ubuntu/gerbv@2.8.2-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.8.2-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.7.0-2",
"2.7.1-1",
"2.8.0-1",
"2.8.1-1",
"2.8.2-1"
]
}
],
"aliases": [],
"details": "An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). A specially-crafted drill file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "UBUNTU-CVE-2021-40391",
"modified": "2025-10-24T04:50:34Z",
"published": "2021-11-19T19:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-40391"
},
{
"type": "REPORT",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1402"
},
{
"type": "REPORT",
"url": "https://github.com/gerbv/gerbv/commit/9f83950b772b37b49ee188300e444546e6aab17e"
},
{
"type": "REPORT",
"url": "https://github.com/gerbv/gerbv/issues/30"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6209-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-40391"
}
],
"related": [
"USN-6209-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-40391"
]
}
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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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