libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an outgoing NTLM type-3 header (`lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()`), generates the request HTTP header contents based on previously received data. The check that exists to prevent the local buffer from getting overflowed is implemented wrongly (using unsigned math) and as such it does not prevent the overflow from happening. This output data can grow larger than the local buffer if very large 'nt response' data is extracted from a previous NTLMv2 header provided by the malicious or broken HTTP server. Such a 'large value' needs to be around 1000 bytes or more. The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header.
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History
07 Nov 2023, 03:10
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Information
Published : 2019-02-06 20:29
Updated : 2024-02-28 16:48
NVD link : CVE-2019-3822
Mitre link : CVE-2019-3822
CVE.ORG link : CVE-2019-3822
JSON object : View
Products Affected
redhat
- enterprise_linux
oracle
- enterprise_manager_ops_center
- http_server
- secure_global_desktop
- services_tools_bundle
- mysql_server
- communications_operations_monitor
canonical
- ubuntu_linux
haxx
- libcurl
netapp
- oncommand_insight
- snapcenter
- clustered_data_ontap
- active_iq_unified_manager
- oncommand_workflow_automation
debian
- debian_linux
siemens
- sinema_remote_connect_client