CVE-2019-12068
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
3.8 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
5.3 Medium
AI Score
Confidence
Low
0.0005 Low
EPSS
Percentile
17.2%
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.
Affected configurations
References
lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html
lists.opensuse.org/opensuse-security-announce/2019-11/msg00038.html
git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de594e47659029316bbf9391efb79da0a1a08e08
lists.debian.org/debian-lts-announce/2019/09/msg00021.html
lists.debian.org/debian-lts-announce/2020/07/msg00020.html
lists.gnu.org/archive/html/qemu-devel/2019-08/msg01518.html
security-tracker.debian.org/tracker/CVE-2019-12068
usn.ubuntu.com/4191-1/
usn.ubuntu.com/4191-2/
www.debian.org/security/2020/dsa-4665
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
3.8 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
5.3 Medium
AI Score
Confidence
Low
0.0005 Low
EPSS
Percentile
17.2%