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vuln-ubuntu/data/osv/usn/USN-5036-1.json
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{
"schema_version": "1.7.0",
"id": "USN-5036-1",
"summary": "tor vulnerabilities",
"details": "It was discovered that Tor incorrectly handled certain memory operations. A\nremote attacker could use this issue to cause a denial of service. This issue\nonly affected Ubuntu 18.04 ESM. (CVE-2019-8955)\n\nIt was discovered that Tor did not properly handle the input length to\ndump_desc() function. A remote attacker could use this issue to cause a denial\nof service. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and\nUbuntu 20.04 ESM. (CVE-2021-28089)\n\nIt was discovered that Tor did not properly sanitize the relay nickname in\ndirvote_add_signatures_to_pending_consensus() function. An attacker could\npossibly use this issue to cause an assertion failure and then cause a denial\nof service. (CVE-2021-28090)\n\nIt was discovered that Tor did not properly validate the layer hint on\nhalf-open streams. A remote attacker could possibly use this issue to bypass\nthe access control, leading to remote code execution. This issue only affected\nUbuntu 20.04 ESM. (CVE-2021-34548)\n\nIt was discovered that Tor was using an insecure hash function. A remote\nattacker could use this issue to cause a denial of service. This issue only\naffected Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and Ubuntu 20.04 ESM.\n(CVE-2021-34549)\n\nIt was discovered that Tor did not properly manage memory under certain\ncircumstances. If a user were tricked into opening a specially crafted request,\na remote attacker could possibly use this issue to cause a crash, resulting in\na denial of service, or possibly reading sensitive data. This issue only\naffected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-34550)\n\nIt was discovered that Tor mishandles the relationship between batch-signature\nverification and single-signature verification. An attacker could possibly use\nthis issue to cause an assertion failure and then cause a denial of service.\nThis issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and Ubuntu 20.04\nESM. (CVE-2021-38385)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2019-8955",
"UBUNTU-CVE-2021-28089",
"UBUNTU-CVE-2021-28090",
"UBUNTU-CVE-2021-34548",
"UBUNTU-CVE-2021-34549",
"UBUNTU-CVE-2021-34550",
"UBUNTU-CVE-2021-38385"
],
"related": [],
"published": "2022-10-04T11:04:57Z",
"modified": "2026-06-29T10:52:51Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.2.4.27-1ubuntu0.1+esm2?arch=source&distro=trusty/esm"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.4.27-1ubuntu0.1+esm2"
}
]
}
],
"versions": [
"0.2.3.25-1",
"0.2.4.19-1",
"0.2.4.20-1",
"0.2.4.27-1build0.14.04.1",
"0.2.4.27-1ubuntu0.1",
"0.2.4.27-1ubuntu0.1+esm1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.2.4.27-1ubuntu0.1+esm2"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.2.4.27-1ubuntu0.1+esm2"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"cves": [
{
"id": "CVE-2021-28090",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.2.9.14-1ubuntu1~16.04.3+esm1?arch=source&distro=esm-apps/xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.9.14-1ubuntu1~16.04.3+esm1"
}
]
}
],
"versions": [
"0.2.6.10-1ubuntu2",
"0.2.7.6-1ubuntu1",
"0.2.9.11-1ubuntu1~16.04.1",
"0.2.9.14-1ubuntu1~16.04.1",
"0.2.9.14-1ubuntu1~16.04.2",
"0.2.9.14-1ubuntu1~16.04.3"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2021-28089",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-28090",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-34549",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-38385",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.3.2.10-1ubuntu0.2~esm2?arch=source&distro=esm-apps/bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.3.2.10-1ubuntu0.2~esm2"
}
]
}
],
"versions": [
"0.3.0.10-1",
"0.3.1.8-2",
"0.3.1.9-1",
"0.3.2.9-1",
"0.3.2.9-1build1",
"0.3.2.10-1",
"0.3.2.10-1ubuntu0.1",
"0.3.2.10-1ubuntu0.2~esm1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.3.2.10-1ubuntu0.2~esm2"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.3.2.10-1ubuntu0.2~esm2"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"cves": [
{
"id": "CVE-2021-28089",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-28090",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-34549",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-34550",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-38385",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.4.2.7-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.2.7-1ubuntu0.1~esm1"
}
]
}
],
"versions": [
"0.4.1.5-1",
"0.4.1.5-1build1",
"0.4.1.6-1",
"0.4.2.5-1",
"0.4.2.6-1",
"0.4.2.7-1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.4.2.7-1ubuntu0.1~esm1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.4.2.7-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"cves": [
{
"id": "CVE-2021-28089",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-28090",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-34548",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-34549",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-34550",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-38385",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5036-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-8955"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-28089"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-28090"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-34548"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-34549"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-34550"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-38385"
}
]
}
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