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Vulnerability Details : CVE-2018-14618

curl before version 7.61.1 is vulnerable to a buffer overrun in the NTLM authentication code. The internal function Curl_ntlm_core_mk_nt_hash multiplies the length of the password by two (SUM) to figure out how large temporary storage area to allocate from the heap. The length value is then subsequently used to iterate over the password and generate output into the allocated storage buffer. On systems with a 32 bit size_t, the math to calculate SUM triggers an integer overflow when the password length exceeds 2GB (2^31 bytes). This integer overflow usually causes a very small buffer to actually get allocated instead of the intended very huge one, making the use of that buffer end up in a heap buffer overflow. (This bug is almost identical to CVE-2017-8816.)
Publish Date : 2018-09-05 Last Update Date : 2019-04-22
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- CVSS Scores & Vulnerability Types

CVSS Score
10.0
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
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 190

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:1880: curl security and bug fix update (Low) oval:com.redhat.rhsa:def:20191880 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-2018-14618

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
6 Application Haxx Libcurl * * * * Version Details Vulnerabilities
7 OS Redhat Enterprise Linux 6.0 * * * Version Details Vulnerabilities
8 OS Redhat Enterprise Linux 7.0 * * * Version Details Vulnerabilities
9 OS Redhat Enterprise Linux 7.4 * * * Version Details Vulnerabilities
10 OS Redhat Enterprise Linux 7.5 * * * Version Details Vulnerabilities
11 OS Redhat Enterprise Linux 7.6 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Debian Debian Linux 1
Haxx Libcurl 1
Redhat Enterprise Linux 5

- References For CVE-2018-14618

https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf CONFIRM
https://security.gentoo.org/glsa/201903-03
GENTOO GLSA-201903-03
https://access.redhat.com/errata/RHSA-2018:3558
REDHAT RHSA-2018:3558
http://www.securitytracker.com/id/1041605
SECTRACK 1041605
https://usn.ubuntu.com/3765-1/
UBUNTU USN-3765-1
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0014 CONFIRM
https://usn.ubuntu.com/3765-2/
UBUNTU USN-3765-2
https://curl.haxx.se/docs/CVE-2018-14618.html CONFIRM
https://www.debian.org/security/2018/dsa-4286
DEBIAN DSA-4286
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14618 CONFIRM
https://access.redhat.com/errata/RHSA-2019:1880
REDHAT RHSA-2019:1880

- Metasploit Modules Related To CVE-2018-14618

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


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