GHSA-c6fg-99pr-25m9

Suggest an improvement
Source
https://github.com/advisories/GHSA-c6fg-99pr-25m9
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-c6fg-99pr-25m9/GHSA-c6fg-99pr-25m9.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-c6fg-99pr-25m9
Published
2022-01-06T23:53:58Z
Modified
2024-12-04T05:29:03.943916Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Uncapped length of skin data fields submitted by players
Details

Impact

Some skin data fields (e.g. skinID, geometryName) are not capped in length. These fields are typically saved in the NBT data of a player when the player quits the server, or during an autosave.

This is problematic due to the 32767 byte limit on TAG_Strings. If any of these fields exceeds 32767 bytes, an exception will be thrown during data saving, which will cause the server to crash.

Other fields (such as skinGeometryData) are also uncapped, but those have a much larger 2 GB length limit, so this is not a concern for those, particularly considering the decompressed packet size limit of 2 MB.

Patches

PM3: 958a9dbf0fe3131ab60319c5a939f5dfbfe5dfbb PM4: 6492cac5c10f9fa8443ceddd2191a7b65b73f601

Workarounds

A plugin may check player skins during PlayerLoginEvent and PlayerSkinChangeEvent and ensure that the offending fields are not larger than 32767 bytes.

For more information

If you have any questions or comments about this advisory: * Email us at team@pmmp.io

Database specific 
{
    "nvd_published_at": null,
    "cwe_ids": [],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2022-01-06T19:47:00Z"
}
References

Affected packages

Packagist / pocketmine/pocketmine-mp

Package

Name
pocketmine/pocketmine-mp
Purl
pkg:composer/pocketmine/pocketmine-mp

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.26.5

Affected versions

3.*

3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.0.7
3.0.8
3.0.9
3.0.10
3.0.11
3.0.12
3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.7
3.1.8
3.2.0
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
3.3.0
3.3.1
3.3.2
3.3.3
3.3.4
3.4.0
3.4.1
3.4.2
3.4.3
3.5.0
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
3.5.9
3.5.10
3.5.11
3.5.12
3.5.13
3.6.0
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
3.7.0
3.7.1
3.7.2
3.7.3
3.8.0
3.8.1
3.8.2
3.8.3
3.8.4
3.8.5
3.8.6
3.8.7
3.9.0
3.9.1
3.9.2
3.9.3
3.9.4
3.9.5
3.9.6
3.9.7
3.9.8
3.10.0
3.10.1
3.11.0
3.11.1
3.11.2
3.11.3
3.11.4
3.11.5
3.11.6
3.11.7
3.12.0
3.12.1
3.12.2
3.12.3
3.12.4
3.12.5
3.12.6
3.13.0
3.13.1
3.14.0
3.14.1
3.14.2
3.14.3
3.15.0
3.15.1
3.15.2
3.15.3
3.15.4
3.16.0
3.16.1
3.17.0
3.17.1
3.17.2
3.17.3
3.17.4
3.17.5
3.17.6
3.17.7
3.18.0
3.18.1
3.18.2
3.19.0
3.19.1
3.19.2
3.19.3
3.20.0
3.21.0
3.21.1
3.22.0
3.22.1
3.22.2
3.22.3
3.22.4
3.22.5
3.23.0
3.23.1
3.24.0
3.25.0
3.25.1
3.25.2
3.25.3
3.25.4
3.25.5
3.25.6
3.26.0
3.26.1
3.26.2
3.26.3
3.26.4

Packagist / pocketmine/pocketmine-mp

Package

Name
pocketmine/pocketmine-mp
Purl
pkg:composer/pocketmine/pocketmine-mp

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.0.0
Fixed
4.0.5

Affected versions

4.*

4.0.0
4.0.1
4.0.2
4.0.3
4.0.4