Home CVE Database CVE-2018-14618

CVE-2018-14618

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.)

Priority: HIGH
CVSS v3: 9.8
Publish Date: Sep 5, 2018
Related ID: --
CVSS v2: CRITICAL
Modified Date: Sep 6, 2018

Find out more about CVE-2018-14618 from the MITRE-CVE dictionary and NIST NVD


Products Affected

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Related Products

Product Name Status Defect Fixed Downloads
Linux 7 SCP Not Vulnerable -- -- --
Linux 7 CGP Not Vulnerable -- -- --

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