CVE-2020-29660

CVSS V2 Low 2.1 CVSS V3 Medium 4.4

Description

A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.

Overview

CVE ID
CVE-2020-29660

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2020-12-09T17:15:31

Last Modified Date
2021-11-30T22:21:53

Weakness Enumerations

CWE	URL
CWE-416	http://cwe.mitre.org/data/definitions/416.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	5.9.13
		AND
cpe:2.3:o:fedoraproject:fedora:32:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:33:::::::*	1	OR
		AND
cpe:2.3:o:debian:debian_linux:9.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR
		AND
cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::	1	OR
		AND
cpe:2.3:o:broadcom:fabric_operating_system:-:::::::*	1	OR
		AND
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h410c_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h410c:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:a700s_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:a700s:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:8300_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:8300:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:8700_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:8700:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:a400_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:a400:-:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
2.1

Severity
LOW

Exploitability Score
3.9

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
HIGH

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
4.4

Base Severity
MEDIUM

Exploitability Score
0.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9	Exploit Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/12/10/1	Mailing List Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0001/	Third Party Advisory
https://www.debian.org/security/2021/dsa-4843	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html	Mailing List Third Party Advisory
http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html	Exploit Third Party Advisory VDB Entry

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-29660
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29660

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:43:58				Added to TrackCVE
2022-12-05 17:51:21	2020-12-09T17:15Z	2020-12-09T17:15:31	CVE Published Date	updated
2022-12-05 17:51:21		2021-11-30T22:21:53	CVE Modified Date	updated
2022-12-05 17:51:21		Analyzed	Vulnerability Status	updated