Path Traversal in Land-Software Faust Iserver
CVE-2021-34805
An issue was discovered in FAUST iServer before 9.0.019.019.7. For each URL request, it accesses the corresponding .fau file on the operating system without preventing %2e%2e%5c directory traversal.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.268 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.268 · newest: 0.268 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sec-consult.com/vulnerability-lab/ (Exploit, Third Party Advisory)
- www.land-software.de/lfs.fau (Product, Vendor Advisory)
- packetstormsecurity.com/files/165701/FAUST-iServer-9.0.018.018.4-Local-File-Inc… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-34805?
- CVE-2021-34805 is a high-severity vulnerability in Land-Software Faust Iserver, classified under Path Traversal. CVSS score: 7.5/10. Published 2022-01-31.
- How severe is CVE-2021-34805?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-34805 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.