An issue was discovered in mgetty before 1.2.1. In contrib/scrts.c, a stack-based buffer overflow can be triggered via a command-line parameter.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-16742 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of mgetty as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the scrts binary, which is found in the contribs directory of the upstream source code.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 2.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | Low |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | mgetty | Not affected |
| Red Hat Enterprise Linux 6 | mgetty | Not affected |
| Red Hat Enterprise Linux 5 | mgetty | Not affected |
Vulmon