CVE-2021-21309

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2021-21309
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21309.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-21309
Aliases
  • GHSA-hgj8-vff2-7cjf
Related
Published
2021-02-26T22:15:19Z
Modified
2024-09-18T03:13:21.543132Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Alpine:v3.10 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.11-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.5-r1
5.0.10-r0

Alpine:v3.11 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.11-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.7-r1

Alpine:v3.12 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.11-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

Alpine:v3.13 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.11-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Alpine:v3.14 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.0-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Alpine:v3.15 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.0-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Alpine:v3.16 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.0-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Alpine:v3.17 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.0-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Alpine:v3.18 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.0-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Alpine:v3.19 / redis

Package

Name
redis
Purl
pkg:apk/alpine/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.0-r0

Affected versions

2.*

2.4.14-r0
2.4.14-r1
2.4.14-r2
2.4.16-r0
2.6.16-r0
2.6.17-r0
2.8.9-r0
2.8.9-r1
2.8.9-r2
2.8.10-r0
2.8.11-r0
2.8.12-r0
2.8.13-r0
2.8.14-r0
2.8.17-r0
2.8.19-r0

3.*

3.0.0-r0
3.0.0-r1
3.0.1-r0
3.0.2-r0
3.0.3-r0
3.0.4-r0
3.0.5-r0
3.0.5-r1
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.2.0-r0
3.2.1-r0
3.2.3-r0
3.2.4-r0
3.2.5-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0

4.*

4.0.2-r0
4.0.2-r1
4.0.5-r0
4.0.6-r0
4.0.8-r0
4.0.9-r0
4.0.9-r1
4.0.9-r2
4.0.10-r0
4.0.10-r1
4.0.11-r0
4.0.12-r0
4.0.13-r0

5.*

5.0.4-r0
5.0.5-r0
5.0.7-r0
5.0.8-r0
5.0.9-r0

6.*

6.0.1-r0
6.0.4-r0
6.0.5-r0
6.0.9-r0
6.0.10-r0

Debian:11 / redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5:6.0.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5:6.0.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5:6.0.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/antirez/redis

Affected ranges

Type
GIT
Repo
https://github.com/antirez/redis
Events
Introduced
05b81d2b02578d432329c87c93f975e582d14c0e
Fixed
562787e4c9953a8780c925238c409adc9316d3dc
Type
GIT
Repo
https://github.com/redis/redis
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c992857618db99776917f10bf4f2345a5fdc78b0

Affected versions

1.*

1.3.6

2.*

2.2-alpha0
2.2-alpha1
2.2-alpha2
2.2-alpha3
2.2-alpha4
2.2-alpha5
2.2-alpha6
2.2.0-rc1
2.3-alpha0

3.*

3.0-alpha0

6.*

6.0-rc1
6.0-rc2
6.0-rc3
6.0-rc4
6.0.0
6.0.1
6.0.10
6.0.2
6.0.3
6.0.4
6.0.5
6.0.6
6.0.7
6.0.8
6.0.9

v1.*

v1.3.10
v1.3.11
v1.3.12
v1.3.7
v1.3.8
v1.3.9

v2.*

v2.0.0-rc1
v2.1.1-watch

Other

vm-playpen
with-deprecated-diskstore