Out-of-bounds Write Affecting glibc-headers package, versions <0:2.17-222.el7
Threat Intelligence
Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ORACLE7-GLIBCHEADERS-2521814
- published10 Apr 2022
- disclosed31 Jan 2018
Introduced: 31 Jan 2018
CVE-2018-1000001 (opens in a new tab)How to fix?
Upgrade Oracle:7 glibc-headers to version 0:2.17-222.el7 or higher.
This issue was patched in ELSA-2018-0805.
NVD Description
Note: Versions mentioned in the description apply only to the upstream glibc-headers package and not the glibc-headers package as distributed by Oracle.
See How to fix? for Oracle:7 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://linux.oracle.com/cve/CVE-2018-1000001.html
- https://linux.oracle.com/errata/ELSA-2018-0805.html
- http://seclists.org/oss-sec/2018/q1/38
- http://www.securityfocus.com/bid/102525
- http://www.securitytracker.com/id/1040162
- https://access.redhat.com/errata/RHSA-2018:0805
- https://security.netapp.com/advisory/ntap-20190404-0003/
- https://usn.ubuntu.com/3534-1/
- https://usn.ubuntu.com/3536-1/
- https://www.exploit-db.com/exploits/43775/
- https://www.exploit-db.com/exploits/44889/
- https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/
- https://www.exploit-db.com/exploits/44889