CVE-2018-14618
CVSS V2 High 10
CVSS V3 Critical 9.8
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.)
Overview
- CVE ID
- CVE-2018-14618
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2018-09-05T19:29:00
- Last Modified Date
- 2019-04-22T17:48:00
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* | 1 | OR | 7.61.1 | |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 10
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 10
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://curl.haxx.se/docs/CVE-2018-14618.html | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14618 | Issue Tracking |
| https://www.debian.org/security/2018/dsa-4286 | Third Party Advisory |
| http://www.securitytracker.com/id/1041605 | Third Party Advisory VDB Entry |
| https://usn.ubuntu.com/3765-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3765-2/ | Third Party Advisory |
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0014 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:3558 | Third Party Advisory |
| https://security.gentoo.org/glsa/201903-03 | Third Party Advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf | |
| https://access.redhat.com/errata/RHSA-2019:1880 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-14618 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14618 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:43:23 | Added to TrackCVE | |||
| 2022-12-03 11:47:53 | 2018-09-05T19:29Z | 2018-09-05T19:29:00 | CVE Published Date | updated |
| 2022-12-03 11:47:53 | 2019-04-22T17:48:00 | CVE Modified Date | updated | |
| 2022-12-03 11:47:53 | Modified | Vulnerability Status | updated |