gsd-2022-2309
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn't be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2022-2309", "description": "NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn\u0027t be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered.", "id": "GSD-2022-2309", "references": [ "https://www.suse.com/security/cve/CVE-2022-2309.html", "https://advisories.mageia.org/CVE-2022-2309.html", "https://access.redhat.com/errata/RHSA-2022:8226", "https://ubuntu.com/security/CVE-2022-2309" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2022-2309" ], "details": "NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn\u0027t be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered.", "id": "GSD-2022-2309", "modified": "2023-12-13T01:19:19.529977Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "security@huntr.dev", "ID": "CVE-2022-2309", "STATE": "PUBLIC", "TITLE": "NULL Pointer Dereference in lxml/lxml" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "lxml/lxml", "version": { "version_data": [ { "version_affected": "\u003c", "version_value": "4.9.1" } ] } } ] }, "vendor_name": "lxml" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn\u0027t be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered." } ] }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.0" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-476 NULL Pointer Dereference" } ] } ] }, "references": { "reference_data": [ { "name": "https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba", "refsource": "CONFIRM", "url": "https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba" }, { "name": "https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f", "refsource": "MISC", "url": "https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f" }, { "name": "GLSA-202208-06", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202208-06" }, { "name": "https://security.netapp.com/advisory/ntap-20220915-0006/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20220915-0006/" }, { "name": "FEDORA-2022-ed0eeb6a20", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/URHHSIBTPTALXMECRLAC2EVDNAFSR5NO/" }, { "name": "FEDORA-2022-ed17f59c1d", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HGYC6L7ENH5VEGN3YWFBYMGKX6WNS7HZ/" } ] }, "source": { "advisory": "8264e74f-edda-4c40-9956-49de635105ba", "discovery": "EXTERNAL" } }, "gitlab.com": { "advisories": [ { "affected_range": "\u003c4.9.1", "affected_versions": "All versions before 4.9.1", "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "cwe_ids": [ "CWE-1035", "CWE-476", "CWE-937" ], "date": "2022-10-28", "description": "NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn\u0027t be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered.", "fixed_versions": [ "4.9.1" ], "identifier": "CVE-2022-2309", "identifiers": [ "CVE-2022-2309" ], "not_impacted": "All versions starting from 4.9.1", "package_slug": "pypi/lxml", "pubdate": "2022-07-05", "solution": "Upgrade to version 4.9.1 or above.", "title": "NULL Pointer Dereference", "urls": [ "https://nvd.nist.gov/vuln/detail/CVE-2022-2309", "https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba", "https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f" ], "uuid": "c43ccf19-f04e-45c7-8607-b47217fceea9" } ] }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:lxml:lxml:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "4.9.1", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndIncluding": "2.9.14", "versionStartIncluding": "2.9.10", "vulnerable": false } ], "operator": "OR" } ], "cpe_match": [], "operator": "AND" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "security@huntr.dev", "ID": "CVE-2022-2309" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn\u0027t be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-476" } ] } ] }, "references": { "reference_data": [ { "name": "https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba", "refsource": "CONFIRM", "tags": [ "Exploit", "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba" }, { "name": "https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f" }, { "name": "GLSA-202208-06", "refsource": "GENTOO", "tags": [ "Third Party Advisory" ], "url": "https://security.gentoo.org/glsa/202208-06" }, { "name": "https://security.netapp.com/advisory/ntap-20220915-0006/", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20220915-0006/" }, { "name": "FEDORA-2022-ed0eeb6a20", "refsource": "FEDORA", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/URHHSIBTPTALXMECRLAC2EVDNAFSR5NO/" }, { "name": "FEDORA-2022-ed17f59c1d", "refsource": "FEDORA", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HGYC6L7ENH5VEGN3YWFBYMGKX6WNS7HZ/" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0" }, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "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": "2022-10-28T18:55Z", "publishedDate": "2022-07-05T10:15Z" } } }
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- 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.