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

CVSS v3.1

3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v2.0

2.1 LOWAV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS

0.52% chance of exploitation in the next 30 days, 42th percentile

Published

2019-10-06

Updated

2024-08-05

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html
• libyal/libfwsi/issues/13

References

• CVE Record
• NVD entry

Related

• CVE-2018-15157
• CVE-2018-15158
• CVE-2018-15159
• CVE-2018-15160
• CVE-2018-15161
• CVE-2018-20348