Impact: Important Public Date: 2019-01-11 CWE: CWE-122 Bugzilla: 1664205: CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_emu() A heap buffer overflow issue was found in the SLiRP networking implementation of the QEMU emulator. It occurs in tcp_emu() routine while emulating the Identification protocol and copying message data to a socket buffer. A user or process could use this flaw to crash the QEMU process on the host resulting in a DoS or potentially executing arbitrary code with privileges of the QEMU process.
Find out more about CVE-2019-6778 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat OpenStack Platform:
This flaw impacts KVM user-mode or SLIRP networking, which is not used in Red Hat OpenStack. Updating is recommended, however Red Hat OpenStack installs are not vulnerable to the described flaw due to the vulnerable feature not being used.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform 9.0 | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 8.0 (Liberty) | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 14 | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 13.0 (Queens) | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 10 | qemu-kvm-rhev | Affected |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Affected |
| Red Hat Enterprise Linux 7 | qemu-kvm | Affected |
| Red Hat Enterprise Linux 6 | qemu-kvm | Affected |
| Red Hat Enterprise Linux 5 | kvm | Fix deferred |
| Red Hat Enterprise Linux 5 | xen | Not affected |
Vulmon