CVE-ID |
CVE-2022-2309
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• CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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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.
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References |
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
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Assigning CNA |
huntr.dev |
Date Record Created |
20220705 |
Disclaimer: The record creation date may reflect when
the CVE ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
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Phase (Legacy) |
Assigned (20220705) |
Votes (Legacy) |
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Comments (Legacy) |
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Proposed (Legacy) |
N/A |
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