ubuntu-cve-2021-28877
Vulnerability from osv_ubuntu
Published
2021-04-11 20:15
Modified
2026-04-22 07:39
Summary
Details

In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libstd-rust-1.31",
            "binary_version": "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1"
          },
          {
            "binary_name": "rust-gdb",
            "binary_version": "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1"
          },
          {
            "binary_name": "rust-lldb",
            "binary_version": "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1"
          },
          {
            "binary_name": "rust-src",
            "binary_version": "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1"
          },
          {
            "binary_name": "rustc",
            "binary_version": "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "rustc",
        "purl": "pkg:deb/ubuntu/rustc@1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.15.1+dfsg0-1~exp1ubuntu2~14.04.7",
        "1.17.0+dfsg2-8~ubuntu0.14.04.3",
        "1.21.0+dfsg1+llvm-0ubuntu3~14.04.5",
        "1.22.1+dfsg1+llvm-0ubuntu2~14.04.2",
        "1.24.1+dfsg1+llvm-0ubuntu1~14.04.1",
        "1.25.0+dfsg1+llvm-0ubuntu1~14.04.1",
        "1.28.0+dfsg1+llvm-0ubuntu1~14.04.1",
        "1.30.0+dfsg1+llvm-2ubuntu1~14.04.1",
        "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1",
        "1.31.0+dfsg1+llvm-2ubuntu1~14.04.1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libstd-rust-1.47",
            "binary_version": "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2"
          },
          {
            "binary_name": "rust-gdb",
            "binary_version": "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2"
          },
          {
            "binary_name": "rust-lldb",
            "binary_version": "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2"
          },
          {
            "binary_name": "rust-src",
            "binary_version": "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2"
          },
          {
            "binary_name": "rustc",
            "binary_version": "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "rustc",
        "purl": "pkg:deb/ubuntu/rustc@1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7.0+dfsg1-1",
        "1.15.1+dfsg0-1~exp1ubuntu2~16.04.3",
        "1.17.0+dfsg2-8~ubuntu0.16.04.2",
        "1.21.0+dfsg1+llvm-0ubuntu3~16.04.1",
        "1.22.1+dfsg1+llvm-0ubuntu2~16.04.2",
        "1.24.1+dfsg1+llvm-0ubuntu1~16.04.1",
        "1.25.0+dfsg1+llvm-0ubuntu1~16.04.1",
        "1.28.0+dfsg1+llvm-0ubuntu1~16.04.1",
        "1.30.0+dfsg1+llvm-2ubuntu1~16.04.1",
        "1.31.0+dfsg1+llvm-2ubuntu1~16.04.1",
        "1.32.0+dfsg1+llvm-1ubuntu1~16.04.1",
        "1.34.1+dfsg2+llvm-0ubuntu1~16.04.1",
        "1.35.0+dfsg0.1+llvm-0ubuntu1~16.04.1",
        "1.36.0+dfsg1+llvm-2ubuntu1~16.04.1",
        "1.37.0+dfsg1+llvm-1ubuntu1~16.04.1",
        "1.39.0+dfsg1+llvm-3ubuntu1~16.04.1",
        "1.41.0+dfsg1+llvm-0ubuntu1~16.04.1",
        "1.43.0+dfsg1+llvm-1~exp1ubuntu2~16.04.1",
        "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1",
        "1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libstd-rust-1.51",
            "binary_version": "1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2"
          },
          {
            "binary_name": "rust-gdb",
            "binary_version": "1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2"
          },
          {
            "binary_name": "rust-lldb",
            "binary_version": "1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2"
          },
          {
            "binary_name": "rust-src",
            "binary_version": "1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2"
          },
          {
            "binary_name": "rustc",
            "binary_version": "1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "rustc",
        "purl": "pkg:deb/ubuntu/rustc@1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.37.0+dfsg1+llvm-1ubuntu1",
        "1.38.0+dfsg0.2+llvm-0ubuntu1",
        "1.38.0+dfsg0.2+llvm-0ubuntu2",
        "1.39.0+dfsg1+llvm-3ubuntu1",
        "1.40.0+dfsg1+llvm-5ubuntu1",
        "1.41.0+dfsg1+llvm-0ubuntu1",
        "1.41.0+dfsg1+llvm-0ubuntu2",
        "1.43.0+dfsg1+llvm-1~exp1ubuntu1~20.04.1",
        "1.47.0+dfsg1+llvm-1ubuntu1~20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.",
  "id": "UBUNTU-CVE-2021-28877",
  "modified": "2026-04-22T07:39:58Z",
  "published": "2021-04-11T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-28877"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rust-lang/rust/pull/80670"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28877"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-28877"
  ]
}



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