QEMU CVE-2017-15124 Denial of Service Vulnerability
by CIRT Team
Description: VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.
Impact: An attacker can exploit this issue to cause denial-of-service conditions.
OpenSSL 1.1.0 users should upgrade to 1.1.0h
OpenSSL 1.0.2 users should upgrade to 1.0.2o
Mitigation: Updates are available. Please see the references or vendor advisory for more information.
Reference URL’s:
- https://lists.gnu.org/archive/html/qemu-devel/2017-12/msg03705.html
- https://www.oracle.com/technetwork/topics/security/linuxbulletinapr2018-4431087.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1525195
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15124
- https://www.securityfocus.com/bid/102295/info
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