CVE-2021-41099

CVSS V2 Medium 6 CVSS V3 High 7.5

Description

Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the underlying string library can be used to corrupt the heap and potentially result with denial of service or remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted network payloads or commands. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

Overview

CVE ID
CVE-2021-41099

Assigner
security-advisories@github.com

Vulnerability Status
Analyzed

Published Version
2021-10-04T18:15:09

Last Modified Date
2022-10-29T02:48:45

Weakness Enumerations

CWE	URL
CWE-190	http://cwe.mitre.org/data/definitions/190.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:redis:redis::::::::	1	OR	5.0.0	5.0.14
cpe:2.3:a:redis:redis::::::::	1	OR	6.0.0	6.0.16
cpe:2.3:a:redis:redis::::::::	1	OR	6.2.0	6.2.6
cpe:2.3:o:fedoraproject:fedora:33:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:35:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:11.0:::::::*	1	OR
cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:::::::*	1	OR
cpe:2.3:a:oracle:communications_operations_monitor:4.3:::::::*	1	OR
cpe:2.3:a:oracle:communications_operations_monitor:4.4:::::::*	1	OR
cpe:2.3:a:oracle:communications_operations_monitor:5.0:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
SINGLE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6

Severity
MEDIUM

Exploitability Score
6.8

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
1.6

Impact Score
5.9

References

Reference URL	Reference Tags
https://github.com/redis/redis/commit/c6ad876774f3cc11e32681ea02a2eead00f2c521	Patch Third Party Advisory
https://github.com/redis/redis/security/advisories/GHSA-j3cr-9h5g-6cph	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202209-17	Third Party Advisory
https://security.netapp.com/advisory/ntap-20211104-0003/	Third Party Advisory
https://www.debian.org/security/2021/dsa-5001	Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-41099
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41099

History

Created	Old Value	New Value	Data Type	Notes
2022-04-20 16:58:54				Added to TrackCVE
2022-12-05 11:45:58	2021-10-04T18:15Z	2021-10-04T18:15:09	CVE Published Date	updated
2022-12-05 11:45:58		2022-10-29T02:48:45	CVE Modified Date	updated
2022-12-05 11:45:58		Analyzed	Vulnerability Status	updated
2022-12-05 11:46:02			References	updated