OESA-2021-1093

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1093
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2021-1093.json
JSON Data
https://api.test.osv.dev/v1/vulns/OESA-2021-1093
Upstream
Published
2021-03-26T11:02:43Z
Modified
2025-08-12T05:07:12.307460Z
Summary
redis security update
Details

Redis is an advanced key-value store. It is often referred to as a dattructure server since keys can contain strings, hashes ,lists, sets anorted sets.

Security Fix(es):

Redis is an open-source, in-memory database that persists on disk. In affected versions of Redis an integer overflow bug in 32-bit Redis version 4.0 or newer could be exploited to corrupt the heap and potentially result with remote code execution. Redis 4.0 or newer uses a configurable limit for the maximum supported bulk input size. By default, it is 512MB which is a safe value for all platforms. If the limit is significantly increased, receiving a large request from a client may trigger several integer overflow scenarios, which would result with buffer overflow and heap corruption. We believe this could in certain conditions be exploited for remote code execution. By default, authenticated Redis users have access to all configuration parameters and can therefore use the “CONFIG SET proto-max-bulk-len” to change the safe default, making the system vulnerable. This problem only affects 32-bit Redis (on a 32-bit system, or as a 32-bit executable running on a 64-bit system). The problem is fixed in version 6.2, and the fix is back ported to 6.0.11 and 5.0.11. Make sure you use one of these versions if you are running 32-bit Redis. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent clients from directly executing CONFIG SET: Using Redis 6.0 or newer, ACL configuration can be used to block the command. Using older versions, the rename-command configuration directive can be used to rename the command to a random string unknown to users, rendering it inaccessible. Please note that this workaround may have an additional impact on users or operational systems that expect CONFIG SET to behave in certain ways.(CVE-2021-21309)

Database specific 
{
    "severity": "Critical"
}
References

Affected packages

openEuler:20.03-LTS / redis

Package

Name
redis
Purl
pkg:rpm/openEuler/redis&distro=openEuler-20.03-LTS

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.11-13.oe1

Ecosystem specific 

{
    "src": [
        "redis-4.0.11-13.oe1.src.rpm",
        "redis-4.0.11-13.oe1.src.rpm"
    ],
    "x86_64": [
        "redis-debugsource-4.0.11-13.oe1.x86_64.rpm",
        "redis-4.0.11-13.oe1.x86_64.rpm",
        "redis-debuginfo-4.0.11-13.oe1.x86_64.rpm",
        "redis-4.0.11-13.oe1.x86_64.rpm",
        "redis-debuginfo-4.0.11-13.oe1.x86_64.rpm",
        "redis-debugsource-4.0.11-13.oe1.x86_64.rpm"
    ],
    "aarch64": [
        "redis-debuginfo-4.0.11-13.oe1.aarch64.rpm",
        "redis-4.0.11-13.oe1.aarch64.rpm",
        "redis-debugsource-4.0.11-13.oe1.aarch64.rpm",
        "redis-debugsource-4.0.11-13.oe1.aarch64.rpm",
        "redis-debuginfo-4.0.11-13.oe1.aarch64.rpm",
        "redis-4.0.11-13.oe1.aarch64.rpm"
    ]
}

openEuler:20.03-LTS-SP1 / redis

Package

Name
redis
Purl
pkg:rpm/openEuler/redis&distro=openEuler-20.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.11-13.oe1

Ecosystem specific 

{
    "src": [
        "redis-4.0.11-13.oe1.src.rpm"
    ],
    "x86_64": [
        "redis-4.0.11-13.oe1.x86_64.rpm",
        "redis-debuginfo-4.0.11-13.oe1.x86_64.rpm",
        "redis-debugsource-4.0.11-13.oe1.x86_64.rpm"
    ],
    "aarch64": [
        "redis-debugsource-4.0.11-13.oe1.aarch64.rpm",
        "redis-debuginfo-4.0.11-13.oe1.aarch64.rpm",
        "redis-4.0.11-13.oe1.aarch64.rpm"
    ]
}