ATProto Browser

ATProto Browser

Experimental browser for the Atmosphere

Post

Time for an Arm-twist! CVE-2023-4039 Tom Hebb (Meta red team) and I discovered an 0day in GCC (for AArch64 targets) during my Arm exploitation training. It renders stack canaries against overflows of dynamically-sized variables useless. developer.arm.com/Arm%20Securi...

Sep 12, 2023, 4:35 PM

Record data

{
  "uri": "at://did:plc:sndynz577wc6ibnxdfq5lzcb/app.bsky.feed.post/3k77k6gmpti2f",
  "cid": "bafyreicwbfnzpisg2nbtz7bjpnijrxwgexjkwvchx5z5e35zjwb6t4yz5a",
  "value": {
    "text": "Time for an Arm-twist! CVE-2023-4039\n\nTom Hebb (Meta red team) and I discovered an 0day in GCC (for AArch64 targets) during my Arm exploitation training. \n\nIt renders stack canaries against overflows of dynamically-sized variables useless. \n\ndeveloper.arm.com/Arm%20Securi...",
    "$type": "app.bsky.feed.post",
    "embed": {
      "$type": "app.bsky.embed.images",
      "images": [
        {
          "alt": "",
          "image": {
            "$type": "blob",
            "ref": {
              "$link": "bafkreicidvpoen7nsqddygnkijk4byvwx47wcfh5lbvd22dyioeepvrcta"
            },
            "mimeType": "image/jpeg",
            "size": 400984
          }
        }
      ]
    },
    "langs": [
      "en"
    ],
    "facets": [
      {
        "index": {
          "byteEnd": 275,
          "byteStart": 242
        },
        "features": [
          {
            "uri": "https://developer.arm.com/Arm%20Security%20Center/GCC%20Stack%20Protector%20Vulnerability%20AArch64",
            "$type": "app.bsky.richtext.facet#link"
          }
        ]
      }
    ],
    "createdAt": "2023-09-12T16:35:44.121Z"
  }
}