National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-1000001 Detail

Current Description

In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

Source:  MITRE
Description Last Modified:  01/31/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://seclists.org/oss-sec/2018/q1/38 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/102525 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040162 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0805
https://usn.ubuntu.com/3534-1/
https://usn.ubuntu.com/3536-1/
https://www.exploit-db.com/exploits/43775/ Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/44889/
https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/ Third Party Advisory

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*    versions up to (including) 2.26

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-1000001
NVD Published Date:
01/31/2018
NVD Last Modified:
06/15/2018