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CVE-2018-1000001

Date: January 31, 2018

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.

Language: C

Severity Score

Related Resources (14)

https://usn.ubuntu.com/3534-1/
https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/
https://www.exploit-db.com/exploits/44889/
http://www.securitytracker.com/id/1040162
https://access.redhat.com/errata/RHSA-2018:0805
https://access.redhat.com/security/cve/CVE-2018-1000001
http://www.securityfocus.com/bid/102525
https://security-tracker.debian.org/tracker/CVE-2018-1000001
https://www.exploit-db.com/exploits/43775/
https://usn.ubuntu.com/3536-1/
https://security.netapp.com/advisory/ntap-20190404-0003/
https://nvd.nist.gov/vuln/detail/CVE-2018-1000001
http://seclists.org/oss-sec/2018/q1/38
https://www.mend.io/vulnerability-database/CVE-2018-1000001

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
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

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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