CVE-2019-17263

NameCVE-2019-17263
Description** DISPUTED ** 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libfwsi (PTS)stretch20170117-1vulnerable
bullseye, sid, buster20181227-1vulnerable
liblnk (PTS)stretch20170111-1vulnerable
bullseye, sid, buster20181227-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libfwsisource(unstable)(unfixed)low
liblnksource(unstable)(unfixed)low

Notes

[buster] - liblnk <no-dsa> (Minor issue)
[stretch] - liblnk <no-dsa> (Minor issue)
[buster] - libfwsi <no-dsa> (Minor issue)
[stretch] - libfwsi <no-dsa> (Minor issue)
https://github.com/libyal/libfwsi/issues/13
https://github.com/libyal/libfwsi/commit/54afa5c71d6c795a555dbcb1e160fea393b98fb3

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