Impact: Important Public Date: 2019-08-16 CWE: CWE-863 Bugzilla: 1746672: CVE-2018-20969 patch: do_ed_script in pch.c does not block strings beginning with a ! character do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-20969 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 8.4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 8 | patch | Under investigation |
| Red Hat Enterprise Linux 7 | patch | Under investigation |
| Red Hat Enterprise Linux 6 | patch | Under investigation |
| Red Hat Enterprise Linux 5 | patch | Under investigation |
Vulmon