CVE-2019-3822

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.

• haxx libcurl (>= 7.36.0 < 7.64.0) • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 18.10 • debian debian linux 9.0 • netapp active iq unified manager (>= 7.3) • netapp active iq unified manager (>= 9.5) • netapp clustered data ontap • netapp oncommand insight • netapp oncommand workflow automation • netapp snapcenter • siemens sinema remote connect client (<= 2.0) • oracle communications operations monitor 3.4 • oracle communications operations monitor 4.0 • oracle enterprise manager ops center 12.3.3 • oracle enterprise manager ops center 12.4.0 • oracle http server 12.2.1.3.0 • oracle mysql server (<= 5.7.26) • oracle mysql server (>= 5.7.27 <= 8.0.15) • oracle secure global desktop 5.4 • oracle services tools bundle 19.2 • redhat enterprise linux 8.0