Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-18311 from the MITRE CVE dictionary dictionary and NIST NVD.
This vulnerability is present in versions of perl included with Red Hat Virtualization Hypervisor and Management Appliance, however it is not exposed in any meaningful way. Perl is only included in these images as a dependency of components which do not manipulate ENV, and are not exposed to user input. A future update may address this issue.
| CVSS3 Base Score | 8.1 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-perl524-perl) | RHSA-2019:0010 | 2019-01-02 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-perl526-perl) | RHSA-2019:0001 | 2019-01-02 |
| Red Hat Enterprise Linux 7 (perl) | RHSA-2019:0109 | 2019-01-21 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-perl524-perl) | RHSA-2019:0010 | 2019-01-02 |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | rhvm-appliance | Fix deferred |
| Red Hat Virtualization 4 | redhat-virtualization-host | Fix deferred |
| Red Hat OpenShift Enterprise 3 | perl | Not affected |
| Red Hat Enterprise Linux 6 | perl | Will not fix |
| Red Hat Enterprise Linux 5 | perl | Will not fix |
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