Out-of-bounds Write Affecting eglibc package, versions <2.19-0ubuntu6.14
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
Exploit Maturity
Mature
EPSS
0.53% (77th
percentile)
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Test your applications- Snyk ID SNYK-UBUNTU1404-EGLIBC-282726
- published 10 Jan 2018
- disclosed 10 Jan 2018
Introduced: 10 Jan 2018
CVE-2018-1000001 Open this link in a new tabHow to fix?
Upgrade Ubuntu:14.04 eglibc to version 2.19-0ubuntu6.14 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream eglibc package and not the eglibc package as distributed by Ubuntu.
See How to fix? for Ubuntu:14.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-1000001
- https://security-tracker.debian.org/tracker/CVE-2018-1000001
- https://www.exploit-db.com/exploits/43775/
- https://www.exploit-db.com/exploits/44889/
- https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/
- https://security.netapp.com/advisory/ntap-20190404-0003/
- http://seclists.org/oss-sec/2018/q1/38
- https://access.redhat.com/errata/RHSA-2018:0805
- http://www.securityfocus.com/bid/102525
- http://www.securitytracker.com/id/1040162
- https://usn.ubuntu.com/3534-1/
- https://usn.ubuntu.com/3536-1/
- https://www.exploit-db.com/exploits/44889