National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-14618 Detail

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:  MITRE
Description Last Modified:  09/05/2018

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Hyperlink Resource
http://www.securitytracker.com/id/1041605
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14618
https://curl.haxx.se/docs/CVE-2018-14618.html
https://usn.ubuntu.com/3765-1/
https://usn.ubuntu.com/3765-2/
https://www.debian.org/security/2018/dsa-4286

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-14618
NVD Published Date:
09/05/2018
NVD Last Modified:
09/18/2018