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CVE-2018-14618

Quick assessment

Affected
[UNKNOWN] curl
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Haxx curl是瑞典Haxx公司的一套利用URL语法在命令行下工作的文件传输工具。该工具支持文件上传和下载，并包含一个用于程序开发的libcurl（客户端URL传输库）。 Haxx curl 7.61.1之前版本中的NTLM身份验证代码存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。

AI Predicted 7.8 Difficulty: Easy EPSS 11.12% · P96

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2018-14618

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.)
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区大小计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Haxx curl 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Haxx curl是瑞典Haxx公司的一套利用URL语法在命令行下工作的文件传输工具。该工具支持文件上传和下载，并包含一个用于程序开发的libcurl（客户端URL传输库）。 Haxx curl 7.61.1之前版本中的NTLM身份验证代码存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
[UNKNOWN] curl 7.61.1 -

II. Public POCs for CVE-2018-14618

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III. Intelligence Information for CVE-2018-14618

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Vendor Advisories for CVE-2018-14618 (8)

Other References for CVE-2018-14618 (2)

IV. Related Vulnerabilities

Same product: curl
Same vendor: [UNKNOWN]
Same weakness: CWE-131

V. Comments for CVE-2018-14618

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