Out-of-bounds Read in Libfwsi Project
CVE-2019-17263
In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/libyal/libfwsi/issues/13 (Exploit, Third Party Advisory)
- github.com/libyal/libfwsi/compare/20181227...20191006 (Patch, Third Party Advisory)
- packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17263?
- CVE-2019-17263 is a low-severity vulnerability in Libfwsi Project, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2019-10-06.
- How severe is CVE-2019-17263?
- Low severity. CVSS v3 base score is 3.3 out of 10.