GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-1000156 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 7.8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux Advanced Update Support 6.5 (patch) | RHSA-2018:2096 | 2018-06-27 |
| Red Hat Enterprise Linux Extended Update Support 7.3 (patch) | RHSA-2018:2092 | 2018-06-27 |
| Red Hat Enterprise Linux Server Update Services for SAP Solutions 7.2 (patch) | RHSA-2018:2093 | 2018-06-27 |
| Red Hat Enterprise Linux Advanced Update Support 7.2 (patch) | RHSA-2018:2093 | 2018-06-27 |
| Red Hat Enterprise Linux Extended Update Support 7.4 (patch) | RHSA-2018:2091 | 2018-06-27 |
| Red Hat Enterprise Linux Extended Update Support 6.7 (patch) | RHSA-2018:2094 | 2018-06-27 |
| Red Hat Enterprise Linux Advanced Update Support 6.4 (patch) | RHSA-2018:2097 | 2018-06-27 |
| Red Hat Enterprise Linux Server TUS (v. 6.6) (patch) | RHSA-2018:2095 | 2018-06-27 |
| Red Hat Enterprise Linux 6 (patch) | RHSA-2018:1199 | 2018-04-23 |
| Red Hat Enterprise Linux Advanced Update Support 6.6 (patch) | RHSA-2018:2095 | 2018-06-27 |
| Red Hat Enterprise Linux 7 (patch) | RHSA-2018:1200 | 2018-04-23 |
| Red Hat Enterprise Linux Server TUS (v. 7.2) (patch) | RHSA-2018:2093 | 2018-06-27 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | patch | Will not fix |
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