CVE-2021-32625

2021-07-0914:52:35

redhat.com

access.redhat.com

redis

flaw

remote code execution

data confidentiality

data integrity

system availability

CVSS2

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.019

Percentile

88.7%

JSON

A flaw was found in Redis. An integer overflow could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Mitigation

The flaw can be mitigated by disallowing usage of the STRALGO LCS command via ACL configuration. Please see <https://redis.io/topics/acl> for more information on how to do this. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).