CVE-2016-6559
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
Improper bounds checking of the obuf variable in the link_ntoa() function in linkaddr.c of the BSD libc library may allow an attacker to read or write from memory. The full impact and severity depends on the method of exploit and how the library is used by applications. According to analysis by FreeBSD developers, it is very unlikely that applications exist that utilize link_ntoa() in an exploitable manner, and the CERT/CC is not aware of any proof of concept. A blog post describes the functionality of link_ntoa() and points out that none of the base utilities use this function in an exploitable manner. For more information, please see FreeBSD Security Advisory SA-16:37.
Overview
- CVE ID
- CVE-2016-6559
- Assigner
- cret@cert.org
- Vulnerability Status
- Modified
- Published Version
- 2018-07-13T20:29:00
- Last Modified Date
- 2019-10-09T23:19:15
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:freebsd:freebsd:10.3:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:freebsd:freebsd:11.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
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://www.securityfocus.com/bid/94694 | Third Party Advisory VDB Entry |
| https://www.kb.cert.org/vuls/id/548487 | Third Party Advisory US Government Resource |
| https://www.freebsd.org/security/advisories/FreeBSD-SA-16:37.libc.asc | Vendor Advisory |
| http://www.securitytracker.com/id/1037398 | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2016-6559 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6559 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:14:06 | Added to TrackCVE | |||
| 2022-12-03 09:52:00 | cert@cert.org | cret@cert.org | CVE Assigner | updated |
| 2022-12-03 09:52:00 | 2018-07-13T20:29Z | 2018-07-13T20:29:00 | CVE Published Date | updated |
| 2022-12-03 09:52:00 | 2019-10-09T23:19:15 | CVE Modified Date | updated | |
| 2022-12-03 09:52:00 | Modified | Vulnerability Status | updated |