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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
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'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.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
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OR
*cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HGYC6L7ENH5VEGN3YWFBYMGKX6WNS7HZ/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HGYC6L7ENH5VEGN3YWFBYMGKX6WNS7HZ/ Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/URHHSIBTPTALXMECRLAC2EVDNAFSR5NO/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/URHHSIBTPTALXMECRLAC2EVDNAFSR5NO/ Mailing List, Third Party Advisory
Changed
Reference Type
https://security.gentoo.org/glsa/202208-06 No Types Assigned
https://security.gentoo.org/glsa/202208-06 Third Party Advisory
Changed
Reference Type
https://security.netapp.com/advisory/ntap-20220915-0006/ No Types Assigned
https://security.netapp.com/advisory/ntap-20220915-0006/ Third Party Advisory
AND
OR
*cpe:2.3:a:lxml:lxml:*:*:*:*:*:*:*:* versions up to (excluding) 4.9.1
OR
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* versions from (including) 2.9.10 up to (including) 2.9.14
Changed
Reference Type
https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f No Types Assigned
https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f Patch, Third Party Advisory
Changed
Reference Type
https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba No Types Assigned
https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba Exploit, Issue Tracking, Patch, Third Party Advisory
Quick Info
CVE Dictionary Entry: CVE-2022-2309 NVD
Published Date: 07/05/2022 NVD
Last Modified: 11/21/2024
Source: huntr.dev