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Fencer Vulns
high 8.8

CVE-2018-1000877 json

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-415: Double Free vulnera…

published 2018-12-20 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2054

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-415: Double Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c, parse_codes(), realloc(rar->lzss.window, new_size) with new_size = 0 that can result in Crash/DoS. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.

Patch / fix

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

debian advisories DEBIAN-CVE-2018-1000877

  • libarchive Ubuntu 14.04 LTS 3.1.2-7ubuntu2.7
  • libarchive Ubuntu 16.04 LTS 3.1.2-11ubuntu0.16.04.5
  • libarchive Ubuntu 18.04 LTS 3.2.2-3.1ubuntu0.2

ubuntu advisories UBUNTU-CVE-2018-1000877

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 RHEL 8 3.3.2-7.el8
  • bsdtar RHEL 8 3.3.2-7.el8
  • libarchive RHEL 7 3.1.2-12.el7
  • bsdtar RHEL 7 3.1.2-12.el7
  • bsdcpio RHEL 7 3.1.2-12.el7

red hat advisories RHSA-2019:3698RHSA-2019:2298

  • libarchive SLE Module for Development Tools 15 SP1, SLE Module for Development Tools 15, SLE Module for Basesystem 15 SP1 +1 more 3.3.2-3.11.1
  • libarchive SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +4 more 3.1.2-26.6.1
  • libarchive SLE Module for Development Tools 15, SLE Module for Basesystem 15 3.3.2-3.8.4

suse advisories SUSE-SU-2019:3093-1SUSE-SU-2019:3092-1SUSE-SU-2019:0831-1

  • bsdtar openSUSE Tumbleweed 3.5.1-1.5
  • libarchive openSUSE Leap 15.1 3.3.2-lp151.5.3.1
  • libarchive openSUSE Leap 15.0 3.3.2-lp150.10.1
  • libarchive openSUSE Leap 15.0 3.3.2-lp150.7.1

opensuse advisories openSUSE-SU-2024:10925-1openSUSE-SU-2019:2632-1openSUSE-SU-2019:2615-1openSUSE-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-2018-1000877 updated cvss 7.0

libarchive: Double free in RAR decoder resulting in a denial of service

  • Red Hat CodeReady Linux Builder (v. 8) bsdcat-debuginfo 3.3.2-7.el8, bsdtar-debuginfo 3.3.2-7.el8, libarchive-devel 3.3.2-7.el8, bsdcpio-debuginfo 3.3.2-7.el8, libarchive-debuginfo 3.3.2-7.el8, libarchive-debugsource 3.3.2-7.el8 Red Hat Enterprise Linux BaseOS (v. 8) bsdtar 3.3.2-7.el8, libarchive 3.3.2-7.el8
    fixed: vendor fix RHSA-2019:3698
  • Red Hat Enterprise Linux Client (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux Client Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7 Red Hat Enterprise Linux ComputeNode (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7 Red Hat Enterprise Linux Server (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux Server Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7
    fixed: vendor fix RHSA-2019:2298
  • Red Hat Enterprise Linux 6 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

Exploit prediction

4.58% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

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.