RUSTSEC-2021-0027.json

{
  "id": "RUSTSEC-2021-0027",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2021-01-07T12:00:00Z",
  "aliases": [
    "CVE-2021-28027",
    "GHSA-cpqj-r29q-chrh"
  ],
  "related": [],
  "summary": "Loading a bgzip block can write out of bounds if size overflows.",
  "details": "Affected versions of `bam` set the length of an internal buffer using\n`self.compressed.set_len(block_size - HEADER_SIZE - MIN_EXTRA_SIZE)` and then\nwrote into it. While `block_size` was constrained to a proper maximum, when it\nwas too small the subtraction could overflow negatively to a large number past\nthe capacity of `self.compressed`.\n\nThis can result in memory corruption in the form of writing out of bounds when\nloading a `bgzip` file with a small `block_size`.\n\nCommit `061eee38d4` fixed this issue by checking for the underflow when setting\nthe buffer size.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "bam",
        "purl": "pkg:cargo/bam"
      },
      "ecosystem_specific": {
        "affects": {
          "arch": [],
          "os": [],
          "functions": [
            "bam::bgzip::Block::load"
          ]
        }
      },
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "informational": null
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.1.3"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/bam"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0027.html"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.com/tprodanov/bam/-/issues/4"
    }
  ]
}