gsd-2018-20843
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).
Aliases
Aliases
{ "GSD": { "alias": "CVE-2018-20843", "description": "In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).", "id": "GSD-2018-20843", "references": [ "https://www.suse.com/security/cve/CVE-2018-20843.html", "https://www.debian.org/security/2019/dsa-4472", "https://access.redhat.com/errata/RHSA-2020:4846", "https://access.redhat.com/errata/RHSA-2020:4484", "https://access.redhat.com/errata/RHSA-2020:3952", "https://access.redhat.com/errata/RHSA-2020:2646", "https://access.redhat.com/errata/RHSA-2020:2644", "https://ubuntu.com/security/CVE-2018-20843", "https://advisories.mageia.org/CVE-2018-20843.html", "https://alas.aws.amazon.com/cve/html/CVE-2018-20843.html", "https://linux.oracle.com/cve/CVE-2018-20843.html" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2018-20843" ], "details": "In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).", "id": "GSD-2018-20843", "modified": "2023-12-13T01:22:29.513122Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-20843", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "n/a", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks)." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "USN-4040-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4040-1/" }, { "name": "USN-4040-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4040-2/" }, { "name": "DSA-4472", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2019/dsa-4472" }, { "name": "20190628 [SECURITY] [DSA 4472-1] expat security update", "refsource": "BUGTRAQ", "url": "https://seclists.org/bugtraq/2019/Jun/39" }, { "name": "[debian-lts-announce] 20190629 [SECURITY] [DLA 1839-1] expat security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html" }, { "name": "FEDORA-2019-18868e1715", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/" }, { "name": "FEDORA-2019-139fcda84d", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/" }, { "name": "openSUSE-SU-2019:1777", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html" }, { "name": "GLSA-201911-08", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/201911-08" }, { "name": "https://www.oracle.com/security-alerts/cpuapr2020.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuapr2020.html" }, { "name": "https://www.oracle.com/security-alerts/cpuoct2020.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" }, { "name": "https://github.com/libexpat/libexpat/issues/186", "refsource": "MISC", "url": "https://github.com/libexpat/libexpat/issues/186" }, { "name": "https://github.com/libexpat/libexpat/pull/262", "refsource": "MISC", "url": "https://github.com/libexpat/libexpat/pull/262" }, { "name": "https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6", "refsource": "MISC", "url": "https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6" }, { "name": "https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes", "refsource": "MISC", "url": "https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes" }, { "name": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226", "refsource": "MISC", "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226" }, { "name": "https://security.netapp.com/advisory/ntap-20190703-0001/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20190703-0001/" }, { "name": "https://support.f5.com/csp/article/K51011533", "refsource": "CONFIRM", "url": "https://support.f5.com/csp/article/K51011533" }, { "name": "https://www.oracle.com/security-alerts/cpuApr2021.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuApr2021.html" }, { "name": "https://www.oracle.com/security-alerts/cpuoct2021.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuoct2021.html" }, { "name": "https://www.tenable.com/security/tns-2021-11", "refsource": "CONFIRM", "url": "https://www.tenable.com/security/tns-2021-11" } ] } }, "gitlab.com": { "advisories": [ { "affected_range": "\u003c2.2.7", "affected_versions": "All versions before 2.2.7", "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "cwe_ids": [ "CWE-1035", "CWE-611", "CWE-937" ], "date": "2019-06-26", "description": "`libexpat` in Expat, XML input including XML names that contain many colons could make the XML parser consume a high amount of RAM and CPU resources while processing, leading to a possible denial-of-service attack.", "fixed_versions": [ "2.3.0" ], "identifier": "CVE-2018-20843", "identifiers": [ "CVE-2018-20843" ], "not_impacted": "All versions starting from 2.2.7", "package_slug": "npm/node-expat", "pubdate": "2019-06-24", "solution": "Upgrade to version 2.3.0 or above.", "title": "Improper Restriction of XML External Entity Reference", "urls": [ "https://nvd.nist.gov/vuln/detail/CVE-2018-20843", "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226", "https://github.com/libexpat/libexpat/issues/186" ], "uuid": "14cdb1f1-b91a-4484-8943-f7b0a7e110d2" } ] }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "2.2.7", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": 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"vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "8.15.0", "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-20843" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks)." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-611" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/libexpat/libexpat/issues/186", "refsource": "MISC", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": 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"refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/4040-1/" }, { "name": "USN-4040-2", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/4040-2/" }, { "name": "20190628 [SECURITY] [DSA 4472-1] expat security update", "refsource": "BUGTRAQ", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://seclists.org/bugtraq/2019/Jun/39" }, { "name": "DSA-4472", "refsource": "DEBIAN", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2019/dsa-4472" }, { "name": "[debian-lts-announce] 20190629 [SECURITY] [DLA 1839-1] expat security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html" }, { "name": "https://security.netapp.com/advisory/ntap-20190703-0001/", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20190703-0001/" }, { "name": "FEDORA-2019-18868e1715", "refsource": "FEDORA", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/" }, { "name": "FEDORA-2019-139fcda84d", "refsource": "FEDORA", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/" }, { "name": "https://support.f5.com/csp/article/K51011533", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://support.f5.com/csp/article/K51011533" }, { "name": "openSUSE-SU-2019:1777", "refsource": "SUSE", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html" }, { "name": "GLSA-201911-08", "refsource": "GENTOO", "tags": [ "Third Party Advisory" ], "url": "https://security.gentoo.org/glsa/201911-08" }, { "name": "N/A", "refsource": "N/A", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpuapr2020.html" }, { "name": "https://www.oracle.com/security-alerts/cpuoct2020.html", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" }, { "name": "https://www.oracle.com/security-alerts/cpuApr2021.html", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpuApr2021.html" }, { "name": "https://www.tenable.com/security/tns-2021-11", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://www.tenable.com/security/tns-2021-11" }, { "name": "https://www.oracle.com/security-alerts/cpuoct2021.html", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0" }, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "HIGH", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } }, "lastModifiedDate": "2022-04-18T17:17Z", "publishedDate": "2019-06-24T17:15Z" } } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.