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Vulnerability Details : 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.
Publish Date : 2019-02-06 Last Update Date : 2021-06-15
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 787

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:3701: curl security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20193701 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-3822

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.10 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
6 Application Haxx Libcurl * * * * Version Details Vulnerabilities
7 Application Netapp Active Iq Unified Manager * * * * Version Details Vulnerabilities
8 Application Netapp Active Iq Unified Manager * * * * Version Details Vulnerabilities
9 Application Netapp Clustered Data Ontap * * * * Version Details Vulnerabilities
10 Application Netapp Oncommand Insight - * * * Version Details Vulnerabilities
11 Application Netapp Oncommand Workflow Automation - * * * Version Details Vulnerabilities
12 Application Netapp Snapcenter - * * * Version Details Vulnerabilities
13 Application Oracle Communications Operations Monitor 3.4 * * * Version Details Vulnerabilities
14 Application Oracle Communications Operations Monitor 4.0 * * * Version Details Vulnerabilities
15 Application Oracle Enterprise Manager Ops Center 12.3.3 * * * Version Details Vulnerabilities
16 Application Oracle Enterprise Manager Ops Center 12.4.0 * * * Version Details Vulnerabilities
17 Application Oracle Http Server * * * Version Details Vulnerabilities
18 Application Oracle Mysql Server * * * * Version Details Vulnerabilities
19 Application Oracle Secure Global Desktop 5.4 * * * Version Details Vulnerabilities
20 Application Oracle Services Tools Bundle 19.2 * * * Version Details Vulnerabilities
21 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
22 Application Siemens Sinema Remote Connect Client * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Debian Debian Linux 1
Haxx Libcurl 1
Netapp Active Iq Unified Manager 2
Netapp Clustered Data Ontap 1
Netapp Oncommand Insight 1
Netapp Oncommand Workflow Automation 1
Netapp Snapcenter 1
Oracle Communications Operations Monitor 2
Oracle Enterprise Manager Ops Center 2
Oracle Http Server 1
Oracle Mysql Server 1
Oracle Secure Global Desktop 1
Oracle Services Tools Bundle 1
Redhat Enterprise Linux 1
Siemens Sinema Remote Connect Client 1

- References For CVE-2019-3822 CONFIRM CONFIRM CONFIRM
REDHAT RHSA-2019:3701[email protected]
MLIST [infra-devnull] 20190404 [GitHub] [incubator-openwhisk-runtime-ballerina] falkzoll commented on issue #15: Update to new base image jdk8u202-b08_openj9-0.12.1. CONFIRM CONFIRM
GENTOO GLSA-201903-03
BID 106950 cURL/libcURL Multiple Buffer Overflow Vulnerabilities Release Date:2019-07-17

- Metasploit Modules Related To CVE-2019-3822

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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