CVE catalog

CVE-2023-39976

libqb affected and fixed versions

log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered. libqb: Buffer overflow in log_blackbox.c The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Severity: High · CVSS 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: Aug 8, 2023, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.18% · Oct 27, 2026

Projects and upstream resources

[libqb][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "libqb",
      "status": "fixed",
      "release": "sid",
      "version": "2.0.10-2"
    },
    {
      "name": "libqb",
      "status": "fixed",
      "release": "forky",
      "version": "2.0.10-2"
    },
    {
      "name": "libqb",
      "status": "fixed",
      "release": "trixie",
      "version": "2.0.8-2"
    },
    {
      "name": "libqb",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "2.0.6-2"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "libqb",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "2.0.8-1"
    },
    {
      "bug": null,
      "name": "libqb",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "2.0.8-1"
    },
    {
      "bug": null,
      "name": "libqb",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "2.0.8-1"
    },
    {
      "bug": null,
      "name": "libqb",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "libqb",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.4-1ubuntu0.2"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "2.0.3-1build1",
        "2.0.4-1",
        "2.0.4-1build1",
        "2.0.4-1ubuntu0.1"
      ],
      "ecosystem": "deb",
      "fixed_version": "2.0.4-1ubuntu0.2",
      "provider_record_id": "UBUNTU-CVE-2023-39976"
    },
    {
      "name": "libqb",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.4-1ubuntu0.2"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "2.0.3-1build1",
        "2.0.4-1",
        "2.0.4-1build1",
        "2.0.4-1ubuntu0.1"
      ],
      "ecosystem": "deb",
      "fixed_version": "2.0.4-1ubuntu0.2",
      "provider_record_id": "USN-6308-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.4+20211112.a2691b9-150400.4.3.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for basesystem 15 sp4",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.4+20211112.a2691b9-150400.4.3.1",
      "provider_record_id": "SUSE-SU-2023:3944-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.4+20211112.a2691b9-150400.4.3.1"
            }
          ]
        }
      ],
      "release": "linux enterprise high availability extension 15 sp4",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.4+20211112.a2691b9-150400.4.3.1",
      "provider_record_id": "SUSE-SU-2023:3944-1"
    },
    {
      "name": "libqb",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.4+20211112.a2691b9-150400.4.3.1"
            }
          ]
        }
      ],
      "release": "leap 15.4",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.4+20211112.a2691b9-150400.4.3.1",
      "provider_record_id": "SUSE-SU-2023:3944-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.6+20220323.758044b-150500.3.3.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for basesystem 15 sp5",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.6+20220323.758044b-150500.3.3.1",
      "provider_record_id": "SUSE-SU-2023:3897-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.6+20220323.758044b-150500.3.3.1"
            }
          ]
        }
      ],
      "release": "linux enterprise high availability extension 15 sp5",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.6+20220323.758044b-150500.3.3.1",
      "provider_record_id": "SUSE-SU-2023:3897-1"
    },
    {
      "name": "libqb",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.6+20220323.758044b-150500.3.3.1"
            }
          ]
        }
      ],
      "release": "leap 15.5",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.6+20220323.758044b-150500.3.3.1",
      "provider_record_id": "SUSE-SU-2023:3897-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.3+20190326.a521604-150100.3.9.1"
            }
          ]
        }
      ],
      "release": "linux enterprise high availability extension 15 sp1",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "1.0.3+20190326.a521604-150100.3.9.1",
      "provider_record_id": "SUSE-SU-2023:3728-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.3+20190326.a521604-150100.3.9.1"
            }
          ]
        }
      ],
      "release": "linux enterprise high availability extension 15 sp2",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "1.0.3+20190326.a521604-150100.3.9.1",
      "provider_record_id": "SUSE-SU-2023:3728-1"
    },
    {
      "name": "libqb",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.3+20190326.a521604-150100.3.9.1"
            }
          ]
        }
      ],
      "release": "leap 15.4",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "1.0.3+20190326.a521604-150100.3.9.1",
      "provider_record_id": "SUSE-SU-2023:3728-1"
    },
    {
      "name": "libqb",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.2+20201203.def947e-150300.3.6.1"
            }
          ]
        }
      ],
      "release": "linux enterprise high availability extension 15 sp3",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "2.0.2+20201203.def947e-150300.3.6.1",
      "provider_record_id": "SUSE-SU-2023:3727-1"
    }
  ]
}

Publisher notes

[bookworm] libqb: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[doxygen2man]Unknown
Source package: [libqb]
Details (2)
- 2.0.6-2 · amd64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
- 2.0.6-2 · arm64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
[libqb100]Unknown
Source package: [libqb]
Details (2)
- 2.0.6-2 · amd64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
- 2.0.6-2 · arm64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
[libqb-dev]Unknown
Source package: [libqb]
Details (2)
- 2.0.6-2 · amd64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
- 2.0.6-2 · arm64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
[libqb-tools]Unknown
Source package: [libqb]
Details (2)
- 2.0.6-2 · amd64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12
- 2.0.6-2 · arm64 · bookworm
  Affected
  dsa · libqb · debian · bookworm; dsa · libqb · debian · 12

[Debian 13 (Trixie)]

[doxygen2man]Unknown
Source package: [libqb]
Details (2)
- 2.0.8-2+b1 · amd64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
- 2.0.8-2+b1 · arm64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
[libqb100]Unknown
Source package: [libqb]
Details (2)
- 2.0.8-2+b1 · amd64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
- 2.0.8-2+b1 · arm64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
[libqb-dev]Unknown
Source package: [libqb]
Details (2)
- 2.0.8-2+b1 · amd64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
- 2.0.8-2+b1 · arm64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
[libqb-tools]Unknown
Source package: [libqb]
Details (2)
- 2.0.8-2+b1 · amd64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13
- 2.0.8-2+b1 · arm64 · trixie
  Fixed · Fixed: 2.0.8-1
  dsa · libqb · debian · 13

Observed: Oct 28, 2026, 5:44:26 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]