RUSTSEC-2022-0049 (GHSA-3FG9-HCQ5-VXRC)

Vulnerability from osv_rustsec – Published: 2022-08-15 12:00 – Updated: 2023-06-13 13:10 – Source website
VLAI
Summary
Use after free in MacOS / iOS implementation
Details

In iana-time-zone v0.1.43 a use-after-free bug in the MacOS / iOS implementation was introduced.

The copied system time zone was released before its name was copied. If the system time zone was changed between the call of CFRelease and str::to_owned(), random memory would be copied.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-exposure"
        ],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "iana_time_zone::get_timezone"
          ],
          "os": [
            "ios",
            "macos"
          ]
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "iana-time-zone",
        "purl": "pkg:cargo/iana-time-zone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.1.43"
            },
            {
              "fixed": "0.1.45"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-3fg9-hcq5-vxrc"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "In iana-time-zone v0.1.43 a use-after-free bug in the MacOS / iOS implementation was introduced.\n\nThe copied system time zone was released before its name was copied.\nIf the system time zone was changed between the call of `CFRelease` and `str::to_owned()`,\nrandom memory would be copied.",
  "id": "RUSTSEC-2022-0049",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2022-08-15T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/iana-time-zone"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2022-0049.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strawlab/iana-time-zone/pull/54"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strawlab/iana-time-zone/pull/50#discussion_r945353515"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Use after free in MacOS / iOS implementation"
}



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