Vulnerability in Libarchive
CVE-2019-1000020
libarchive 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Libarchive
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 29
- openSUSE Leap — versions 15.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/libarchive/libarchive/pull/1120 (Third Party Advisory)
- usn.ubuntu.com/3884-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/02/msg00013.html (mailing-list, Third Party Advisory)
- github.com/libarchive/libarchive/pull/1120/commits/8312eaa576014cd9b965012af51b… (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00055.html (vendor-advisory, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2298 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:3698 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-12/msg00012.html (vendor-advisory)
Frequently asked questions
- What is CVE-2019-1000020?
- CVE-2019-1000020 is a medium-severity vulnerability in Libarchive, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2019-02-04.
- How severe is CVE-2019-1000020?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-1000020 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.