Description
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
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/libyal/libfwsi/issues/13
Patch, Third Party Advisory x_refsource_misc
https://github.com/libyal/libfwsi/compare/20181227...20191006
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html
Scores
CVSS v3
3.3
EPSS
0.0016
EPSS Percentile
36.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-125
Status
published
Products (1)
libfwsi_project/libfwsi
< 20191006
Published
Oct 06, 2019
Tracked Since
Feb 18, 2026