Multiple integer overflow flaws were found in the libevent's evbuffer API. An attacker able to make an application pass an excessively long input to libevent using the API could use these flaws to make the application enter an infinite loop, crash, and, possibly, execute arbitrary code.
Find out more about CVE-2015-6525 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 5.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | openmpi | Not affected |
| Red Hat Enterprise Linux 7 | libevent | Fix deferred |
| Red Hat Enterprise Linux 7 | firefox | Will not fix |
| Red Hat Enterprise Linux 7 | thunderbird | Will not fix |
| Red Hat Enterprise Linux 6 | firefox | Will not fix |
| Red Hat Enterprise Linux 6 | thunderbird | Will not fix |
| Red Hat Enterprise Linux 6 | openmpi | Not affected |
| Red Hat Enterprise Linux 6 | chromium-browser | Will not fix |
| Red Hat Enterprise Linux 6 | libevent | Not affected |
| Red Hat Enterprise Linux 5 | openmpi | Not affected |
| Red Hat Enterprise Linux 5 | thunderbird | Will not fix |
| Red Hat Enterprise Linux 5 | firefox | Will not fix |
| Red Hat Enterprise Linux 5 | libevent | Not affected |
| Red Hat Enterprise Linux 4 | openmpi | Not affected |
| Red Hat Enterprise Linux 4 | nfs-utils | Not affected |
Vulmon