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Fencer Vulns
medium 6.5

CVE-2018-1000880 json

libarchive version commit 9693801580c0cf7c70e862d305270a16b52826a7 onwards (release v3.2.0 onwards) contains a CWE-20: Improper Input Valid…

published 2018-12-20 7 y ago modified 2026-10-08 31 d ago also EUVD-2018-2057

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

libarchive version commit 9693801580c0cf7c70e862d305270a16b52826a7 onwards (release v3.2.0 onwards) contains a CWE-20: Improper Input Validation vulnerability in WARC parser - libarchive/archive_read_support_format_warc.c, _warc_read() that can result in DoS - quasi-infinite run time and disk usage from tiny file. This attack appear to be exploitable via the victim must open a specially crafted WARC file.

Patch / fix

  • libarchive libarchive 3.4.0
  • libarchive Debian 14, Debian 13, Debian 12 3.3.3-2

debian advisories DEBIAN-CVE-2018-1000880

  • libarchive Ubuntu 18.04 LTS 3.2.2-3.1ubuntu0.2

ubuntu advisories UBUNTU-CVE-2018-1000880

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libarchive SLE Module for Development Tools 15, SLE Module for Basesystem 15 3.3.2-3.8.4

suse advisories SUSE-SU-2019:0831-1

  • bsdtar openSUSE Tumbleweed 3.5.1-1.5
  • libarchive openSUSE Leap 15.0 3.3.2-lp150.7.1

opensuse advisories openSUSE-SU-2024:10925-1openSUSE-SU-2019:1196-1

  • libarchive Arch Linux 3.4.0-1

arch linux advisories AVG-837

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1000880 updated cvss 4.3

libarchive: Improper input validation in WARC parser resulting in a denial of service

  • Red Hat Enterprise Linux 8 bsdtar, libarchive
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 libarchive Red Hat Enterprise Linux 7 bsdtar, bsdcpio, libarchive
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
31 d ago

Exploit prediction

4.09% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.