UBUNTU-CVE-2020-29129 (CVE-2020-29129)

Vulnerability from osv_ubuntu – Published: 2020-11-26 20:15 – Updated: 2026-04-22 07:39 – Source website
VLAI
Details

ncsi.c in libslirp through 4.3.1 has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the total packet length.

Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libslirp0",
            "binary_version": "4.1.0-2ubuntu2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libslirp",
        "purl": "pkg:deb/ubuntu/libslirp@4.1.0-2ubuntu2.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.0-2ubuntu2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.0-1",
        "4.0.0-2",
        "4.1.0-1",
        "4.1.0-2",
        "4.1.0-2ubuntu1",
        "4.1.0-2ubuntu2",
        "4.1.0-2ubuntu2.1"
      ]
    }
  ],
  "aliases": [],
  "details": "ncsi.c in libslirp through 4.3.1 has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the total packet length.",
  "id": "UBUNTU-CVE-2020-29129",
  "modified": "2026-04-22T07:39:38Z",
  "published": "2020-11-26T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-29129"
    },
    {
      "type": "REPORT",
      "url": "https://lists.freedesktop.org/archives/slirp/2020-November/000115.html"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2020/11/27/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5009-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-29129"
    }
  ],
  "related": [
    "USN-5009-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-29129"
  ]
}



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