usn-6727-1
Vulnerability from osv_ubuntu
Published
2024-04-10 13:40
Modified
2026-04-27 14:11
Summary
nss vulnerabilities
Details

It was discovered that NSS incorrectly handled padding when checking PKCS#1 certificates. A remote attacker could possibly use this issue to perform Bleichenbacher-like attacks and recover private data. This issue only affected Ubuntu 20.04 LTS. (CVE-2023-4421)

It was discovered that NSS had a timing side-channel when performing RSA decryption. A remote attacker could possibly use this issue to recover private data. (CVE-2023-5388)

It was discovered that NSS had a timing side-channel when using certain NIST curves. A remote attacker could possibly use this issue to recover private data. (CVE-2023-6135)

The NSS package contained outdated CA certificates. This update refreshes the NSS package to version 3.98 which includes the latest CA certificate bundle and other security improvements.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-4421",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-5388",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-6135",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss3",
            "binary_version": "2:3.98-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libnss3-tools",
            "binary_version": "2:3.98-0ubuntu0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "nss",
        "purl": "pkg:deb/ubuntu/nss@2:3.98-0ubuntu0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:3.98-0ubuntu0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:3.45-1ubuntu2",
        "2:3.47-1ubuntu1",
        "2:3.47-1ubuntu2",
        "2:3.48-1ubuntu1",
        "2:3.49.1-1ubuntu1",
        "2:3.49.1-1ubuntu1.1",
        "2:3.49.1-1ubuntu1.2",
        "2:3.49.1-1ubuntu1.4",
        "2:3.49.1-1ubuntu1.5",
        "2:3.49.1-1ubuntu1.6",
        "2:3.49.1-1ubuntu1.7",
        "2:3.49.1-1ubuntu1.8",
        "2:3.49.1-1ubuntu1.9"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-5388",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-6135",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss3",
            "binary_version": "2:3.98-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "libnss3-tools",
            "binary_version": "2:3.98-0ubuntu0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "nss",
        "purl": "pkg:deb/ubuntu/nss@2:3.98-0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:3.98-0ubuntu0.22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:3.68-1ubuntu1",
        "2:3.68-1ubuntu2",
        "2:3.68.2-0ubuntu1",
        "2:3.68.2-0ubuntu1.1",
        "2:3.68.2-0ubuntu1.2"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that NSS incorrectly handled padding when checking PKCS#1\ncertificates. A remote attacker could possibly use this issue to perform\nBleichenbacher-like attacks and recover private data. This issue only\naffected Ubuntu 20.04 LTS. (CVE-2023-4421)\n\nIt was discovered that NSS had a timing side-channel when performing RSA\ndecryption. A remote attacker could possibly use this issue to recover\nprivate data. (CVE-2023-5388)\n\nIt was discovered that NSS had a timing side-channel when using certain\nNIST curves. A remote attacker could possibly use this issue to recover\nprivate data. (CVE-2023-6135)\n\nThe NSS package contained outdated CA certificates. This update refreshes\nthe NSS package to version 3.98 which includes the latest CA certificate\nbundle and other security improvements.\n",
  "id": "USN-6727-1",
  "modified": "2026-04-27T14:11:33Z",
  "published": "2024-04-10T13:40:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6727-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-4421"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-5388"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-6135"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "nss vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2023-4421",
    "UBUNTU-CVE-2023-5388",
    "UBUNTU-CVE-2023-6135"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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