CVE-2020-29661

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.

Overview

CVE ID
CVE-2020-29661

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

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

Last Modified Date
2023-01-17T21:24:56

Weakness Enumerations

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

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	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
		AND
cpe:2.3:a:oracle:tekelec_platform_distribution::::::::	1	OR	7.4.0	7.7.1

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc	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/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/	Third Party Advisory
http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html	Third Party Advisory VDB Entry
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
https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory
http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html	Third Party Advisory VDB Entry

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-29661
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29661

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:43:58				Added to TrackCVE
2022-12-05 17:51:26	2020-12-09T17:15Z	2020-12-09T17:15:31	CVE Published Date	updated
2022-12-05 17:51:26		2021-11-30T22:21:23	CVE Modified Date	updated
2022-12-05 17:51:26		Undergoing Analysis	Vulnerability Status	updated
2023-01-17 22:14:11		2023-01-17T21:24:56	CVE Modified Date	updated
2023-01-17 22:14:11	Undergoing Analysis	Analyzed	Vulnerability Status	updated