CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
66.1%
Package : qemu
Version : 1:2.8+dfsg-6+deb9u13
CVE ID : CVE-2020-15469 CVE-2020-15859 CVE-2020-25084 CVE-2020-28916
CVE-2020-29130 CVE-2020-29443 CVE-2021-20181 CVE-2021-20221
Debian Bug : 970253 965978 970539 974687 976388
Several vulnerabilities were discovered in QEMU, a fast processor
emulator (notably used in KVM and Xen HVM virtualization). An attacker
could trigger a denial-of-service (DoS), information leak, and
possibly execute arbitrary code with the privileges of the QEMU
process on the host.
CVE-2020-15469
A MemoryRegionOps object may lack read/write callback methods,
leading to a NULL pointer dereference.
CVE-2020-15859
QEMU has a use-after-free in hw/net/e1000e_core.c because a guest
OS user can trigger an e1000e packet with the data's address set
to the e1000e's MMIO address.
CVE-2020-25084
QEMU has a use-after-free in hw/usb/hcd-xhci.c because the
usb_packet_map return value is not checked.
CVE-2020-28916
hw/net/e1000e_core.c has an infinite loop via an RX descriptor
with a NULL buffer address.
CVE-2020-29130
slirp.c has a buffer over-read because it tries to read a certain
amount of header data even if that exceeds the total packet
length.
CVE-2020-29443
ide_atapi_cmd_reply_end in hw/ide/atapi.c allows out-of-bounds
read access because a buffer index is not validated.
CVE-2021-20181
9pfs: ZDI-CAN-10904: QEMU Plan 9 file system TOCTOU privilege
escalation vulnerability.
CVE-2021-20221
aarch64: GIC: out-of-bound heap buffer access via an interrupt ID
field.
For Debian 9 stretch, these problems have been fixed in version
1:2.8+dfsg-6+deb9u13.
We recommend that you upgrade your qemu packages.
For the detailed security status of qemu please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/qemu
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
Attachment:
signature.asc
Description: PGP signature
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 9 | armel | qemu-guest-agent | < 1:2.8+dfsg-6+deb9u13 | qemu-guest-agent_1:2.8+dfsg-6+deb9u13_armel.deb |
Debian | 9 | amd64 | qemu-system-common | < 1:2.8+dfsg-6+deb9u13 | qemu-system-common_1:2.8+dfsg-6+deb9u13_amd64.deb |
Debian | 9 | armhf | qemu-user-static | < 1:2.8+dfsg-6+deb9u13 | qemu-user-static_1:2.8+dfsg-6+deb9u13_armhf.deb |
Debian | 9 | i386 | qemu | < 1:2.8+dfsg-6+deb9u13 | qemu_1:2.8+dfsg-6+deb9u13_i386.deb |
Debian | 9 | i386 | qemu-system-arm | < 1:2.8+dfsg-6+deb9u13 | qemu-system-arm_1:2.8+dfsg-6+deb9u13_i386.deb |
Debian | 9 | i386 | qemu-system-misc | < 1:2.8+dfsg-6+deb9u13 | qemu-system-misc_1:2.8+dfsg-6+deb9u13_i386.deb |
Debian | 9 | armhf | qemu-system-arm | < 1:2.8+dfsg-6+deb9u13 | qemu-system-arm_1:2.8+dfsg-6+deb9u13_armhf.deb |
Debian | 9 | armel | qemu | < 1:2.8+dfsg-6+deb9u13 | qemu_1:2.8+dfsg-6+deb9u13_armel.deb |
Debian | 10 | amd64 | qemu-system-common | < 1:3.1+dfsg-8+deb10u9 | qemu-system-common_1:3.1+dfsg-8+deb10u9_amd64.deb |
Debian | 9 | amd64 | qemu-utils | < 1:2.8+dfsg-6+deb9u13 | qemu-utils_1:2.8+dfsg-6+deb9u13_amd64.deb |
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
66.1%