Описание
The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| qemu | fixed | 1:2.5+dfsg-4 | package | |
| qemu | end-of-life | squeeze | package | |
| qemu-kvm | removed | package | ||
| qemu-kvm | end-of-life | squeeze | package |
Примечания
https://bugzilla.redhat.com/show_bug.cgi?id=1296060
Upstream fix: https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00428.html
https://www.openwall.com/lists/oss-security/2016/01/11/7
fw_cfg support for guest-side data writes removed in 2.4 (1:2.4+dfsg-1a)
http://git.qemu.org/?p=qemu.git;a=commit;h=023e3148567ac898c7258138f8e86c3c2bb40d07 (v2.4.0-rc0)
fw_cfg_read removed in: http://git.qemu.org/?p=qemu.git;a=commit;h=6c8d56a2e95712a6206a2671d2b04b2e59cabc0b
EPSS
Связанные уязвимости
The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.
The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.
The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.
The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.
ELSA-2016-0083: qemu-kvm security and bug fix update (IMPORTANT)
EPSS