It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data.
Find out more about CVE-2013-7423 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of glibc as shipped with Red Hat Enterprise Linux 5 as they did not include the vulnerable code, which was introduced in later versions.
| Base Score | 1.2 |
|---|---|
| Base Metrics | AV:L/AC:H/Au:N/C:P/I:N/A:N |
| Access Vector | Local |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (glibc) | RHSA-2015:2199 | 2015-11-19 |
| Red Hat Enterprise Linux Extended Update Support 7.1 (glibc) | RHSA-2015:2589 | 2015-12-09 |
| Red Hat Enterprise Linux Advanced Update Support 6.5 (glibc) | RHSA-2016:1207 | 2016-06-07 |
| Red Hat Enterprise Linux 6 (glibc) | RHSA-2015:0863 | 2015-04-21 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | glibc | Not affected |
Vulmon