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[GHSA-92jh-gwch-jq38] PocketMine-MP server crash with certain invalid JSON payloads in LoginPacket due to dependency vulnerability (again) #4371

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May 23, 2024
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[GHSA-92jh-gwch-jq38] PocketMine-MP server crash with certain invalid JSON payloads in LoginPacket due to dependency vulnerability (again) #4371

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4 changes: 2 additions & 2 deletions advisories/github-reviewed/2023/09/GHSA-92jh-gwch-jq38/GHSA-92jh-gwch-jq38.json
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{
"schema_version": "1.4.0",
"id": "GHSA-92jh-gwch-jq38",
"modified": "2023-09-14T17:10:37Z",
"modified": "2023-09-14T17:10:38Z",
"published": "2023-09-14T17:10:37Z",
"aliases": [

],
"summary": "PocketMine-MP server crash with certain invalid JSON payloads in `LoginPacket` due to dependency vulnerability (again)",
"details": "### Impact\nAn attacker could crash the server by sending malformed JWT JSON in `LoginPacket` due to a security vulnerability in [`netresearch/jsonmapper`](https://github.com/cweiske/JsonMapper), due to accepting `NULL` values in arrays whose types do not expect `NULL`.\n\n### Patches\nThis problem was fixed in 5.3.1 and 4.23.1 by updating JsonMapper to include the following commit: pmmp/netresearch-jsonmapper@4f90e8dab1c9df331fad7d3d89823404e882668c\n\n### Workarounds\nA plugin may handle `DataPacketReceiveEvent` for `LoginPacket` and check that none of the input arrays contain `NULL` where it's not expected, but this is rather cumbersome.",
"details": "### Impact\nAn attacker could crash the server by sending malformed JWT JSON in `LoginPacket` due to a security vulnerability in [`pocketmine/netresearch-jsonmapper`](https://github.com/pmmp/netresearch-jsonmapper), due to accepting `NULL` values in arrays whose types do not expect `NULL`.\n\n### Patches\nThis problem was fixed in 5.3.1 and 4.23.1 by updating JsonMapper to include the following commit: pmmp/netresearch-jsonmapper@4f90e8dab1c9df331fad7d3d89823404e882668c\n\n### Workarounds\nA plugin may handle `DataPacketReceiveEvent` for `LoginPacket` and check that none of the input arrays contain `NULL` where it's not expected, but this is rather cumbersome.",
"severity": [
{
"type": "CVSS_V3",
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