CVE-2022-40320
CVE-2022-40320 is a high-severity vulnerability in Libconfuse Project Libconfuse with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Libconfuse Project Libconfuse
- Published:
- Last modified:
Description
cfg_tilde_expand in confuse.c in libConfuse 3.3 has a heap-based buffer over-read.
Frequently asked questions
- What is CVE-2022-40320?
- cfg_tilde_expand in confuse.c in libConfuse 3.3 has a heap-based buffer over-read.
- How severe is CVE-2022-40320?
- CVE-2022-40320 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-40320 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-40320?
- CVE-2022-40320 primarily affects Libconfuse Project Libconfuse. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-40320?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2022-40320 published?
- CVE-2022-40320 was published on 2022-09-09 and last updated on 2026-06-17.
References
- https://github.com/libconfuse/libconfuse/issues/163
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BSAZK4KAWRWNAFUBBXOYU3PVNH3X7226/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EDUT2V62V2XF2IT5TJFPB6P3EQ6X5VLL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FJKHAPJ6AUWVP4HDGKH4M5A2XXWQI73O/
Affected products (4)
- cpe:2.3:a:libconfuse_project:libconfuse:3.3:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
More vulnerabilities in Libconfuse Project Libconfuse
- CVE-2018-19760 — High (CVSS 8.8): cfg_init in confuse.c in libConfuse 3.2.2 has a memory leak.
- CVE-2018-14447 — High (CVSS 8.8): trim_whitespace in lexer.l in libConfuse v3.2.1 has an out-of-bounds read.
All CVEs affecting Libconfuse Project Libconfuse →
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