CVE-2018-20452

NameCVE-2018-20452
DescriptionThe read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.
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 severitymedium
Debian Bugs919324

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
r-cran-readxl (PTS)stretch0.1.1-1+deb9u2fixed
stretch (security)0.1.1-1+deb9u1vulnerable
buster1.3.0-1fixed
bullseye, sid1.3.1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
r-cran-readxlsource(unstable)1.2.0.9000-1919324
r-cran-readxlsourcestretch0.1.1-1+deb9u2

Notes

https://github.com/evanmiller/libxls/issues/35

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