Vulnerability Details : CVE-2019-17263
Potential exploit
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
Products affected by CVE-2019-17263
- cpe:2.3:a:libfwsi_project:libfwsi:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-17263
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-17263
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
3.3
|
LOW | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
1.8
|
1.4
|
NIST |
CWE ids for CVE-2019-17263
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-17263
-
https://github.com/libyal/libfwsi/compare/20181227...20191006
Comparing 20181227...20191006 · libyal/libfwsi · GitHubPatch;Third Party Advisory
-
http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html
libyal libfwsi Buffer Overread ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
https://github.com/libyal/libfwsi/issues/13
libfwsi_extension_block minimum size should be 8 not 6 · Issue #13 · libyal/libfwsi · GitHubExploit;Third Party Advisory
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