Use After Free in Xlsxio Project
CVE-2023-34795
xlsxio v0.1.2 to v0.2.34 was discovered to contain a free of uninitialized pointer in the xlsxioread_sheetlist_close() function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted XLSX file.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (26.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/brechtsanders/xlsxio/issues/121 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/brechtsanders/xlsxio/commit/d653f1604b54532f11b45dca1fa164b4a1f15e2d (Patch)
- github.com/xf1les/cve-advisories/blob/main/2023/CVE-2023-34795.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-34795?
- CVE-2023-34795 is a high-severity vulnerability in Xlsxio Project, classified under Use After Free. CVSS score: 7.8/10. Published 2023-06-16.
- How severe is CVE-2023-34795?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-34795 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.