CVE-2019-12068

LOW

Description

In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances 's->dsp' index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well.

References

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00038.html

https://git.qemu.org/?p=qemu.git;a=commit;h=de594e47659029316bbf9391efb79da0a1a08e08

https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html

https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html

https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg01518.html

https://security-tracker.debian.org/tracker/CVE-2019-12068

https://usn.ubuntu.com/4191-1/

https://usn.ubuntu.com/4191-2/

https://www.debian.org/security/2020/dsa-4665

Details

Source: MITRE

Published: 2019-09-24

Updated: 2020-07-26

Type: CWE-835

Risk Information

CVSS v2.0

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 3.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Impact Score: 1.4

Exploitability Score: 2

Severity: LOW