The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://security.cucumberlinux.com/security/details.php?id=161 | third party advisory |
| https://security.gentoo.org/glsa/201712-04 | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHSA-2018:3558 | vendor advisory |
| https://curl.haxx.se/docs/adv_2017-12e7.html | mitigation vendor advisory |
| http://www.securityfocus.com/bid/101998 | vdb entry third party advisory |
| http://www.securitytracker.com/id/1039896 | vdb entry third party advisory |
| https://www.debian.org/security/2017/dsa-4051 | third party advisory vendor advisory |
| http://www.securitytracker.com/id/1040608 | vdb entry |