A vulnerability was found in c-ares. A hostname with an escaped trailing dot (such as "hello\.") would have its size calculated incorrectly, leading to a single byte written beyond the end of a buffer on the heap. An attacker able to provide such a hostname to an application using c-ares, could potentially cause that application to crash.
Find out more about CVE-2016-5180 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
| Base Score | 5 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
| CVSS3 Base Score | 5.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-nodejs4-nodejs) | RHSA-2017:0002 | 2017-01-02 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-nodejs4-nodejs) | RHSA-2017:0002 | 2017-01-02 |
| Platform | Package | State |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-nodejs6-nodejs | Not affected |
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-nodejs8-nodejs | Not affected |
| Red Hat Software Collections for Red Hat Enterprise Linux | nodejs010-c-ares | Will not fix |
| Red Hat Software Collections for Red Hat Enterprise Linux | nodejs010-nodejs | Will not fix |
| Red Hat OpenShift Enterprise 3 | nodejs | Not affected |
| Red Hat OpenShift Enterprise 2 | nodejs010-nodejs | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 7.0 Operational Tools for RHEL 7 | nodejs | Will not fix |
| Red Hat Enterprise Linux 7 | c-ares | Will not fix |
| Red Hat Enterprise Linux 6 | c-ares | Will not fix |
| Red Hat Enterprise Linux 5 | c-ares | Will not fix |
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