CVE-2018-8778
Public on 2018-04-03
Modified on 2019-08-27
Description
A integer underflow was found in the way String#unpack decodes the unpacking format. An attacker, able to control the unpack format, could use this flaw to disclose arbitrary parts of the application's memory.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | ruby | 2019-08-23 | ALAS2-2019-1276 | Fixed |
| Amazon Linux 1 | ruby20 | 2018-04-04 | ALAS-2018-983 | Fixed |
| Amazon Linux 1 | ruby22 | 2018-04-04 | ALAS-2018-983 | Fixed |
| Amazon Linux 1 | ruby23 | 2018-04-04 | ALAS-2018-983 | Fixed |
| Amazon Linux 1 | ruby24 | 2018-04-04 | ALAS-2018-983 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L |
| NVD | CVSSv2 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| NVD | CVSSv3 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |