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.
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.
QEMU: vga: OOB read access during display update QEMU: Slirp: use-after-free when sending response Qemu: memory exhaustion through framebuffer update request message in VNC server QEMU: I/O: potential memory exhaustion via websock connection to VNC Qemu: Out-of-bounds read in vga_draw_text routine
QEMU: vga: OOB read access during display update QEMU: VGA: reachable assert failure during display update QEMU: Slirp: use-after-free when sending response Qemu: stack buffer overflow in NBD server triggered via long export name qemu: DoS via large option request Qemu: memory exhaustion through framebuffer update request message in VNC server QEMU: I/O: potential memory exhaustion via websock connection to VNC Qemu: Out-of-bounds read in vga_draw_text routine
Security update for qemu
Affected: Ubuntu:Pro:14.04:LTS: qemu, Ubuntu:Pro:16.04:LTS: qemu
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.
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux und QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.