Out-of-bounds Write Affecting glibc package, versions <2.26-4
Threat Intelligence
Exploit Maturity
Mature
EPSS
0.53% (78th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-GLIBC-519526
- 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 Debian:11 glibc to version 2.26-4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian.
See How to fix? for Debian:11 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
- 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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-1000001
- https://usn.ubuntu.com/3534-1/
- https://usn.ubuntu.com/3536-1/
- https://www.exploit-db.com/exploits/44889