It was found that rubygems could use an excessive amount of CPU while parsing a sufficiently long gem summary. A specially crafted gem from a gem repository could freeze gem commands attempting to parse its summary.
Find out more about CVE-2017-0900 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the versions of ruby as shipped with Red Hat Enterprise Linux 6, and 7 and the versions of rh-ruby22-ruby and rh-ruby23-ruby as shipped with Red Hat Software Collections. Red Hat Product Security has rated this issue as having Low security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
| CVSS3 Base Score | 4.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-ruby23-ruby) | RHSA-2018:0585 | 2018-03-26 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-ruby22-ruby) | RHSA-2018:0583 | 2018-03-26 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-ruby22-ruby) | RHSA-2018:0583 | 2018-03-26 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-ruby24-ruby) | RHSA-2017:3485 | 2017-12-19 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-ruby24-ruby) | RHSA-2017:3485 | 2017-12-19 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-ruby23-ruby) | RHSA-2018:0585 | 2018-03-26 |
| Red Hat Enterprise Linux 7 (ruby) | RHSA-2018:0378 | 2018-02-28 |
| Platform | Package | State |
|---|---|---|
| Red Hat Subscription Asset Manager 1 | ruby193-rubygems | Under investigation |
| Red Hat Satellite 6 | rubygems | Under investigation |
| Red Hat Enterprise MRG 2 | rubygems | Under investigation |
| Red Hat Enterprise Linux 6 | rubygems | Will not fix |
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