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{"acknowledgement": "Red Hat would like to thank Daniel Stenberg (the Curl project) for reporting this issue. Upstream acknowledges Wenxiang Qian (Tencent Blade Team) as the original reporter.", "affected_release": [{"advisory": "RHSA-2019:1543", "cpe": "cpe:/a:redhat:jboss_core_services:1", "product_name": "JBoss Core Services Apache HTTP Server 2.4.29 SP2", "release_date": "2019-06-18T00:00:00Z"}, {"advisory": "RHSA-2019:3701", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "curl-0:7.61.1-11.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2019-11-05T00:00:00Z"}], "bugzilla": {"description": "curl: NTLMv2 type-3 header stack buffer overflow", "id": "1670254", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1670254"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-121", "details": ["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.", "A stack-based buffer overflow was found in the way curl handled NTLMv2 type-3 headers. When connecting to a remote malicious server which uses NTLM authentication, the flaw could cause curl to crash."], "mitigation": {"lang": "en:us", "value": "Turn off NTLM authentication."}, "name": "CVE-2019-3822", "package_state": [{"cpe": "cpe:/a:redhat:rhel_dotnet:1.0", "fix_state": "Out of support scope", "package_name": "rh-dotnetcore10-curl", "product_name": ".NET Core 1.0 on Red Hat Enterprise Linux"}, {"cpe": "cpe:/a:redhat:rhel_dotnet:1.1", "fix_state": "Out of support scope", "package_name": "rh-dotnetcore11-curl", "product_name": ".NET Core 1.1 on Red Hat Enterprise Linux"}, {"cpe": "cpe:/a:redhat:rhel_dotnet:2.1", "fix_state": "Will not fix", "package_name": "rh-dotnet21-curl", "product_name": ".NET Core 2.1 on Red Hat Enterprise Linux"}, {"cpe": "cpe:/a:redhat:rhel_dotnet:2.2", "fix_state": "Out of support scope", "package_name": "rh-dotnet22-curl", "product_name": ".NET Core 2.2 on Red Hat Enterprise Linux"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Affected", "package_name": "curl", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat JBoss Web Server 5"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Will not fix", "package_name": "httpd24-curl", "product_name": "Red Hat Software Collections"}], "public_date": "2019-02-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-3822\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3822\nhttps://curl.haxx.se/docs/CVE-2019-3822.html"], "statement": "The versions of curl package shipped with Red Hat Enterprise Linux 5, 6, and 7 do not support NTLMv2 type-3 headers, hence they are not affected by this flaw.", "threat_severity": "Moderate"}

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