A double-free vulnerability was found in Quagga. A BGP peer could send a specially crafted UPDATE message which would cause allocated blocks of memory to be free()d more than once, potentially leading to a crash or other issues.
Find out more about CVE-2018-5379 from the MITRE CVE dictionary dictionary and NIST NVD.
Glibc's heap protection mitigations render this issue more difficult to exploit, though bypasses may still be possible.
| 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 Enterprise Linux 7 (quagga) | RHSA-2018:0377 | 2018-02-28 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | quagga | Will not fix |
| Red Hat Enterprise Linux 5 | quagga | Will not fix |
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