CVE-2023-3040
CVE-2023-3040 is a low-severity vulnerability in Cloudflare Lua-resty-json with a CVSS 3.x base score of 3.7. 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: Low (CVSS 3.x base score 3.7)
- EPSS exploit prediction: 1% (49th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Cloudflare Lua-resty-json
- Published:
- Last modified:
Description
A debug function in the lua-resty-json package, up to commit id 3ef9492bd3a44d9e51301d6adc3cd1789c8f534a (merged in PR #14) contained an out of bounds access bug that could have allowed an attacker to launch a DoS if the function was used to parse untrusted input data. It is important to note that because this debug function was only used in tests and demos, it was not exploitable in a normal environment.
Frequently asked questions
- What is CVE-2023-3040?
- A debug function in the lua-resty-json package, up to commit id 3ef9492bd3a44d9e51301d6adc3cd1789c8f534a (merged in PR #14) contained an out of bounds access bug that could have allowed an attacker to launch a DoS if the function was used to parse untrusted input data. It is important to note that because this debug function was only used in tests and demos, it was not exploitable in a normal environment.
- How severe is CVE-2023-3040?
- CVE-2023-3040 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2023-3040 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-3040?
- CVE-2023-3040 affects Cloudflare Lua-resty-json. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-3040?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-3040 published?
- CVE-2023-3040 was published on 2023-06-14 and last updated on 2026-06-17.
References
- https://github.com/cloudflare/lua-resty-json/pull/14
- https://github.com/cloudflare/lua-resty-json/security/advisories/GHSA-h8rp-9622-83pg
Affected products (1)
- cpe:2.3:a:cloudflare:lua-resty-json:*:*:*:*:*:*:*:*
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