CVE-2023-39976: Buffer Overflow
First published: Tue Aug 08 2023(Updated: )
log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/libqb | <2.0.4-1ubuntu0.2 | 2.0.4-1ubuntu0.2 |
| ubuntu/libqb | <2.0.6-2ubuntu0.1 | 2.0.6-2ubuntu0.1 |
| Clusterlabs Libqb | <2.0.8 | |
| <2.0.8 | ||
| redhat/libqb | <2.0.8 | 2.0.8 |
| debian/libqb | <=2.0.3-1<=2.0.6-2 | 1.0.5-1 2.0.8-1 |
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Reference Links
- https://github.com/ClusterLabs/libqb/commit/1bbaa929b77113532785c408dd1b41cd0521ffc8
- https://github.com/ClusterLabs/libqb/compare/v2.0.7...v2.0.8
- https://github.com/ClusterLabs/libqb/pull/490
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KECNF7LFBPE57XSBT6EM7ACVMIBP63WH/
- https://launchpad.net/bugs/cve/CVE-2023-39976
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KECNF7LFBPE57XSBT6EM7ACVMIBP63WH/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2230709
- https://access.redhat.com/errata/RHSA-2023:5597
- https://access.redhat.com/errata/RHSA-2023:6578
- https://access.redhat.com/errata/RHSA-2023:7376
- https://bugzilla.redhat.com/show_bug.cgi?id=2230708
- https://security-tracker.debian.org/tracker/CVE-2023-39976
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-39976
- https://ubuntu.com/security/notices/USN-6308-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-39976
- https://ubuntu.com/security/CVE-2023-39976
Frequently Asked Questions
What is CVE-2023-39976?
CVE-2023-39976 is a vulnerability in libqb before 2.0.8 that allows a buffer overflow via long log messages.
What is the severity of CVE-2023-39976?
CVE-2023-39976 has a severity score of 9.8 (Critical).
How does CVE-2023-39976 affect Clusterlabs Libqb?
CVE-2023-39976 affects Clusterlabs Libqb versions up to and excluding 2.0.8.
How does CVE-2023-39976 affect Ubuntu libqb?
CVE-2023-39976 affects Ubuntu libqb versions 2.0.4-1ubuntu0.2 and 2.0.6-2ubuntu0.1.
How can I fix CVE-2023-39976?
To fix CVE-2023-39976, update libqb to version 2.0.8 or later.
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