CVE-2018-1000878

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.4%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416: Use After Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c that can result in Crash/DoS - it is unknown if RCE is possible. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
46
EG Risk 46/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation4% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
4.4%
EPSS %ILE
91st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

December 20, 2018

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Aug 20, 2026
Patch available. Sources: redhat, github_pr.
generic Patch Available

[SECURITY] [DLA 1612-1] libarchive security update

https://lists.debian.org/debian-lts-announce/2018/12/msg00011.html
github_pr

Fix various crash, memory corruption and infinite loop conditions

Fix merged in libarchive/libarchive PR #1105 on 2018-12-13 — awaiting tagged release

https://github.com/libarchive/libarchive/pull/1105/commits/bfcfe6f04ed20db2504db8a254d1f40a1d84eb28
github_pr

Fix various crash, memory corruption and infinite loop conditions

Fix merged in libarchive/libarchive PR #1105 on 2018-12-13 — awaiting tagged release

https://github.com/libarchive/libarchive/pull/1105
generic

Bug #1794909 “Memory corruption in RAR decoder” : Bugs : libarchive package : Ubuntu

https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2019:3698
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2019:2298
generic

CVE-2018-1000877 - PSIRT.COM

http://www.securityfocus.com/bid/106324

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibarchive13 (3.2.2-3.1ubuntu0.2) @ bionic2026-05-28ubuntu
redhatlibarchive-0:3.3.2-7.el82019-11-05redhat
redhatlibarchive-0:3.1.2-12.el72019-08-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libarchive—
  • every version up to 3.3.3-2: fixed in 3.3.3-2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libarchive—
  • every version up to 3.3.3-2: fixed in 3.3.3-2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libarchive—
  • every version up to 3.3.3-2: fixed in 3.3.3-2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libarchive—
  • every version up to 3.3.3-2: fixed in 3.3.3-2
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
libarchive3.1.2-11 ... 3.1.2-11+deb8u5 (7 versions)
  • every version up to 3.1.2-11+deb8u6: fixed in 3.1.2-11+deb8u6
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
libarchive3.2.2-2
  • every version up to 3.2.2-2+deb9u1: fixed in 3.2.2-2+deb9u1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 154 total refreshes for this CVE.

  1. 2026-10-05 17:39 UTCEPSS rescore
  2. 2026-10-03 14:21 UTCEPSS rescore
  3. 2026-10-03 14:21 UTCEPSS rescore
  4. 2026-09-30 14:59 UTCEPSS rescore
  5. 2026-09-30 09:50 UTCEG score recompute
  6. 2026-09-28 15:42 UTCOSV refresh
  7. 2026-09-28 13:45 UTCEPSS rescore
  8. 2026-09-27 13:40 UTCEPSS rescore
  9. 2026-09-27 13:40 UTCEPSS rescore
  10. 2026-09-26 15:53 UTCEPSS rescore
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  20. 2026-09-12 14:56 UTCEPSS rescore
  21. 2026-09-11 09:31 UTCEPSS rescore
  22. 2026-09-08 20:04 UTCOSV refresh
  23. 2026-09-07 15:56 UTCEPSS rescore
  24. 2026-09-05 15:24 UTCEPSS rescore
  25. 2026-09-04 13:56 UTCEPSS rescore
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  1. 2026-09-04 05:02 UTCEPSS rescore
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  4. 2026-09-01 03:31 UTCEPSS rescore
  5. 2026-08-30 19:13 UTCEPSS rescore
  6. 2026-08-28 21:36 UTCEPSS rescore
  7. 2026-08-27 14:21 UTCEPSS rescore
  8. 2026-08-26 14:41 UTCEPSS rescore
  9. 2026-08-25 13:44 UTCEPSS rescore
  10. 2026-08-23 00:14 UTCEPSS rescore
  11. 2026-08-22 04:37 UTCOSV refresh
  12. 2026-08-21 23:44 UTCEPSS rescore
  13. 2026-08-19 16:59 UTCEPSS rescore
  14. 2026-08-18 13:43 UTCEPSS rescore
  15. 2026-08-16 14:51 UTCEPSS rescore
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  20. 2026-08-08 16:32 UTCEPSS rescore
  21. 2026-08-07 16:22 UTCEPSS rescore
  22. 2026-08-06 13:42 UTCEPSS rescore
  23. 2026-08-06 13:42 UTCEPSS rescore
  24. 2026-08-06 08:10 UTCOSV refresh
  25. 2026-08-05 19:13 UTCEPSS rescore
  26. 2026-08-02 02:23 UTCEPSS rescore
  27. 2026-08-02 02:23 UTCEPSS rescore
  28. 2026-08-01 04:12 UTCEPSS rescore
  29. 2026-07-30 16:24 UTCEPSS rescore
  30. 2026-07-30 01:26 UTCEPSS rescore
  31. 2026-07-28 15:32 UTCEPSS rescore
  32. 2026-07-23 14:15 UTCEPSS rescore
  33. 2026-07-23 01:32 UTCEG score recompute
  34. 2026-07-22 22:12 UTCEG score recompute
  35. 2026-07-22 14:04 UTCEPSS rescore
  36. 2026-07-21 15:21 UTCEPSS rescore
  37. 2026-07-21 01:17 UTCOSV refresh
  38. 2026-07-20 17:04 UTCEPSS rescore
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  40. 2026-07-19 14:28 UTCEPSS rescore
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  42. 2026-07-19 02:26 UTCEPSS rescore
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  44. 2026-07-18 10:01 UTCEPSS rescore
  45. 2026-07-16 16:59 UTCEPSS rescore
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  47. 2026-07-15 16:55 UTCEPSS rescore
  48. 2026-07-15 16:54 UTCEPSS rescore
  49. 2026-07-15 01:56 UTCEPSS rescore
  50. 2026-07-15 01:56 UTCEPSS rescore
  51. 2026-07-13 22:26 UTCEPSS rescore
  52. 2026-07-13 22:26 UTCEPSS rescore
  53. 2026-07-12 05:43 UTCEPSS rescore
  54. 2026-07-11 08:24 UTCEPSS rescore
  55. 2026-07-09 19:06 UTCEPSS rescore
  56. 2026-07-08 15:11 UTCEPSS rescore
  57. 2026-07-07 13:42 UTCEPSS rescore
  58. 2026-07-06 16:24 UTCEPSS rescore
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  60. 2026-07-06 02:20 UTCEPSS rescore
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  63. 2026-07-04 06:28 UTCEPSS rescore
  64. 2026-07-04 06:28 UTCEPSS rescore
  65. 2026-07-03 20:26 UTCOSV refresh
  66. 2026-07-02 16:54 UTCEPSS rescore
  67. 2026-07-01 15:03 UTCEPSS rescore
  68. 2026-06-30 23:19 UTCEPSS rescore
  69. 2026-06-30 23:19 UTCEPSS rescore
  70. 2026-06-28 14:04 UTCEPSS rescore
  71. 2026-06-28 04:53 UTCEPSS rescore
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  73. 2026-06-27 03:06 UTCEPSS rescore
  74. 2026-06-25 13:47 UTCEPSS rescore
  75. 2026-06-24 14:02 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-1000878?
CVE-2018-1000878 is a high vulnerability published on December 20, 2018. libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416: Use After Free vulnerability in RAR decoder - libarchive/archivereadsupportformatrar.c that can result in Crash/DoS - it is unknown if RCE is possible. This attack appear to be…
When was CVE-2018-1000878 disclosed?
CVE-2018-1000878 was first published on December 20, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-1000878 actively exploited?
CVE-2018-1000878 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.4% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-1000878?
CVE-2018-1000878 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-1000878?
A fix for CVE-2018-1000878 is available: update to the fixed version the vendor names in its advisory.

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