GSD-2020-9484
Vulnerability from gsd - Updated: 2023-12-13 01:21Details
When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-9484",
"description": "When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.",
"id": "GSD-2020-9484",
"references": [
"https://www.suse.com/security/cve/CVE-2020-9484.html",
"https://www.debian.org/security/2020/dsa-4727",
"https://access.redhat.com/errata/RHSA-2021:3140",
"https://access.redhat.com/errata/RHSA-2020:3017",
"https://access.redhat.com/errata/RHSA-2020:2530",
"https://access.redhat.com/errata/RHSA-2020:2529",
"https://access.redhat.com/errata/RHSA-2020:2509",
"https://access.redhat.com/errata/RHSA-2020:2506",
"https://access.redhat.com/errata/RHSA-2020:2487",
"https://access.redhat.com/errata/RHSA-2020:2483",
"https://ubuntu.com/security/CVE-2020-9484",
"https://advisories.mageia.org/CVE-2020-9484.html",
"https://security.archlinux.org/CVE-2020-9484",
"https://alas.aws.amazon.com/cve/html/CVE-2020-9484.html",
"https://linux.oracle.com/cve/CVE-2020-9484.html",
"https://packetstormsecurity.com/files/cve/CVE-2020-9484",
"https://access.redhat.com/errata/RHSA-2022:5532"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-9484"
],
"details": "When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.",
"id": "GSD-2020-9484",
"modified": "2023-12-13T01:21:52.829804Z",
"schema_version": "1.4.0"
}
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"gitlab.com": {
"advisories": [
{
"affected_range": "[7.0.0,7.0.103],[8.5.0,8.5.54],[9.0.0,9.0.34],[10.0.0-M1,10.0.0-M4]",
"affected_versions": "All versions starting from 7.0.0 up to 7.0.103, all versions starting from 8.5.0 up to 8.5.54, all versions starting from 9.0.0 up to 9.0.34, all versions starting from 10.0.0-M1 up to 10.0.0-M4",
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"cvss_v3": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"cwe_ids": [
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"CWE-502",
"CWE-937"
],
"date": "2021-12-02",
"description": "When using Apache Tomcat, an attacker is able to control the contents and name of a file on the server.",
"fixed_versions": [
"7.0.104",
"8.5.55",
"9.0.35",
"10.0.0-M5"
],
"identifier": "CVE-2020-9484",
"identifiers": [
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],
"not_impacted": "All versions before 7.0.0, all versions after 7.0.103 before 8.5.0, all versions after 8.5.54 before 9.0.0, all versions after 9.0.34 before 10.0.0, all versions after 10.0.0-M4",
"package_slug": "maven/org.apache.tomcat.embed/tomcat-embed-core",
"pubdate": "2020-05-20",
"solution": "Upgrade to versions 7.0.104, 8.5.55, 9.0.35, 10.0.0-M4 or above.",
"title": "Deserialization of Untrusted Data",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-9484"
],
"uuid": "7c092285-dc9f-4c2e-8192-92ab54f2489e"
},
{
"affected_range": "[7.0.0,7.0.103],[8.5.0,8.5.54],[9.0.0,9.0.34],[10.0.0]",
"affected_versions": "All versions starting from 7.0.0 up to 7.0.103, all versions starting from 8.5.0 up to 8.5.54, all versions starting from 9.0.0 up to 9.0.34, version 10.0.0",
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"cwe_ids": [
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"CWE-502",
"CWE-937"
],
"date": "2020-10-27",
"description": "When using Apache Tomcat to M1 to to to if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the `PersistenceManager` with a `FileStore`; and c) the `PersistenceManager` is configured with `sessionAttributeValueClassNameFilter=\"null\"` (the default unless a `SecurityManager` is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by `FileStore` to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.",
"fixed_versions": [
"7.0.104",
"8.5.55",
"9.0.35"
],
"identifier": "CVE-2020-9484",
"identifiers": [
"CVE-2020-9484"
],
"not_impacted": "All versions before 7.0.0, all versions after 7.0.103 before 8.5.0, all versions after 8.5.54 before 9.0.0, all versions after 9.0.34 before 10.0.0, all versions after 10.0.0",
"package_slug": "maven/org.apache.tomcat/tomcat-catalina",
"pubdate": "2020-05-20",
"solution": "Upgrade to versions 7.0.104, 8.5.55, 9.0.35 or above.",
"title": "Deserialization of Untrusted Data",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-9484",
"http://packetstormsecurity.com/files/157924/Apache-Tomcat-CVE-2020-9484-Proof-Of-Concept.html"
],
"uuid": "7fd2b075-2fa3-4e4f-b489-76492a9a5186"
}
]
},
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.4,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9
}
},
"lastModifiedDate": "2022-07-25T18:15Z",
"publishedDate": "2020-05-20T19:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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