CVE-2019-1000020

NameCVE-2019-1000020
Descriptionlibarchive version commit 5a98dcf8a86364b3c2c469c85b93647dfb139961 onwards (version v2.8.0 onwards) contains a CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in ISO9660 parser, archive_read_support_format_iso9660.c, read_CE()/parse_rockridge() that can result in DoS by infinite loop. This attack appears to be exploitable via the victim opening a specially crafted ISO9660 file.
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)
ReferencesDLA-1668-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libarchive (PTS)jessie3.1.2-11+deb8u3vulnerable
jessie (security)3.1.2-11+deb8u7fixed
stretch (security), stretch3.2.2-2+deb9u1vulnerable
buster, sid3.3.3-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libarchivesource(unstable)3.3.3-4low
libarchivesourcejessie3.1.2-11+deb8u7mediumDLA-1668-1

Notes

[stretch] - libarchive <no-dsa> (Minor issue)
https://github.com/libarchive/libarchive/pull/1120
https://github.com/libarchive/libarchive/commit/8312eaa576014cd9b965012af51bc1f967b12423

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