ubuntu-cve-2024-43167
Vulnerability from osv_ubuntu
Published
2024-08-12 13:38
Modified
2026-04-22 07:50
Summary
Details
DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libunbound2",
"binary_version": "1.4.22-1ubuntu4.14.04.3+esm1"
},
{
"binary_name": "python-unbound",
"binary_version": "1.4.22-1ubuntu4.14.04.3+esm1"
},
{
"binary_name": "unbound",
"binary_version": "1.4.22-1ubuntu4.14.04.3+esm1"
},
{
"binary_name": "unbound-anchor",
"binary_version": "1.4.22-1ubuntu4.14.04.3+esm1"
},
{
"binary_name": "unbound-host",
"binary_version": "1.4.22-1ubuntu4.14.04.3+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "unbound",
"purl": "pkg:deb/ubuntu/unbound@1.4.22-1ubuntu4.14.04.3+esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.22-1ubuntu4.14.04.3+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.20-1",
"1.4.21-1",
"1.4.21-1ubuntu1",
"1.4.21-1ubuntu2",
"1.4.22-1ubuntu1",
"1.4.22-1ubuntu2",
"1.4.22-1ubuntu3",
"1.4.22-1ubuntu4",
"1.4.22-1ubuntu4.14.04.1",
"1.4.22-1ubuntu4.14.04.2",
"1.4.22-1ubuntu4.14.04.3"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libunbound2",
"binary_version": "1.5.8-1ubuntu1.1+esm1"
},
{
"binary_name": "python-unbound",
"binary_version": "1.5.8-1ubuntu1.1+esm1"
},
{
"binary_name": "unbound",
"binary_version": "1.5.8-1ubuntu1.1+esm1"
},
{
"binary_name": "unbound-anchor",
"binary_version": "1.5.8-1ubuntu1.1+esm1"
},
{
"binary_name": "unbound-host",
"binary_version": "1.5.8-1ubuntu1.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "unbound",
"purl": "pkg:deb/ubuntu/unbound@1.5.8-1ubuntu1.1+esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.8-1ubuntu1.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.22-1ubuntu6",
"1.5.7-1ubuntu1",
"1.5.7-1ubuntu2",
"1.5.8-1ubuntu1",
"1.5.8-1ubuntu1.1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libunbound2",
"binary_version": "1.6.7-1ubuntu2.6+esm2"
},
{
"binary_name": "python-unbound",
"binary_version": "1.6.7-1ubuntu2.6+esm2"
},
{
"binary_name": "python3-unbound",
"binary_version": "1.6.7-1ubuntu2.6+esm2"
},
{
"binary_name": "unbound",
"binary_version": "1.6.7-1ubuntu2.6+esm2"
},
{
"binary_name": "unbound-anchor",
"binary_version": "1.6.7-1ubuntu2.6+esm2"
},
{
"binary_name": "unbound-host",
"binary_version": "1.6.7-1ubuntu2.6+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "unbound",
"purl": "pkg:deb/ubuntu/unbound@1.6.7-1ubuntu2.6+esm2?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.7-1ubuntu2.6+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.5-1",
"1.6.7-1",
"1.6.7-1build1",
"1.6.7-1ubuntu1",
"1.6.7-1ubuntu2",
"1.6.7-1ubuntu2.1",
"1.6.7-1ubuntu2.2",
"1.6.7-1ubuntu2.3",
"1.6.7-1ubuntu2.4",
"1.6.7-1ubuntu2.5",
"1.6.7-1ubuntu2.6"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libunbound8",
"binary_version": "1.9.4-2ubuntu1.8"
},
{
"binary_name": "python-unbound",
"binary_version": "1.9.4-2ubuntu1.8"
},
{
"binary_name": "python3-unbound",
"binary_version": "1.9.4-2ubuntu1.8"
},
{
"binary_name": "unbound",
"binary_version": "1.9.4-2ubuntu1.8"
},
{
"binary_name": "unbound-anchor",
"binary_version": "1.9.4-2ubuntu1.8"
},
{
"binary_name": "unbound-host",
"binary_version": "1.9.4-2ubuntu1.8"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "unbound",
"purl": "pkg:deb/ubuntu/unbound@1.9.4-2ubuntu1.8?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.9.4-2ubuntu1.8"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.9.0-2ubuntu1",
"1.9.0-2ubuntu2",
"1.9.4-2",
"1.9.4-2ubuntu1",
"1.9.4-2ubuntu1.1",
"1.9.4-2ubuntu1.2",
"1.9.4-2ubuntu1.3",
"1.9.4-2ubuntu1.4",
"1.9.4-2ubuntu1.5",
"1.9.4-2ubuntu1.6"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libunbound8",
"binary_version": "1.13.1-1ubuntu5.7"
},
{
"binary_name": "python3-unbound",
"binary_version": "1.13.1-1ubuntu5.7"
},
{
"binary_name": "unbound",
"binary_version": "1.13.1-1ubuntu5.7"
},
{
"binary_name": "unbound-anchor",
"binary_version": "1.13.1-1ubuntu5.7"
},
{
"binary_name": "unbound-host",
"binary_version": "1.13.1-1ubuntu5.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "unbound",
"purl": "pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.7?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.13.1-1ubuntu5.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.13.1-1ubuntu1",
"1.13.1-1ubuntu3",
"1.13.1-1ubuntu5",
"1.13.1-1ubuntu5.1",
"1.13.1-1ubuntu5.2",
"1.13.1-1ubuntu5.3",
"1.13.1-1ubuntu5.4",
"1.13.1-1ubuntu5.5"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libunbound8",
"binary_version": "1.19.2-1ubuntu3.2"
},
{
"binary_name": "python3-unbound",
"binary_version": "1.19.2-1ubuntu3.2"
},
{
"binary_name": "unbound",
"binary_version": "1.19.2-1ubuntu3.2"
},
{
"binary_name": "unbound-anchor",
"binary_version": "1.19.2-1ubuntu3.2"
},
{
"binary_name": "unbound-host",
"binary_version": "1.19.2-1ubuntu3.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "unbound",
"purl": "pkg:deb/ubuntu/unbound@1.19.2-1ubuntu3.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.2-1ubuntu3.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.17.1-2",
"1.18.0-2ubuntu1",
"1.18.0-2ubuntu2",
"1.19.1-1ubuntu1",
"1.19.2-1ubuntu1",
"1.19.2-1ubuntu3",
"1.19.2-1ubuntu3.1"
]
}
],
"aliases": [],
"details": "DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly.",
"id": "UBUNTU-CVE-2024-43167",
"modified": "2026-04-22T07:50:16Z",
"published": "2024-08-12T13:38:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2024-43167"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-43167"
},
{
"type": "REPORT",
"url": "https://github.com/NLnetLabs/unbound/pull/1073"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6998-1"
}
],
"related": [
"USN-6998-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2024-43167"
]
}
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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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