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Fencer Intel
high 7.5

CVE-2018-20030 json

An error when processing the EXIF_IFD_INTEROPERABILITY and EXIF_IFD_EXIF tags within libexif version 0.6.21 can be exploited to exhaust ava…

published 7y ago modified 4mo ago also EUVD-2018-12607

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.8%
EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

An error when processing the EXIF_IFD_INTEROPERABILITY and EXIF_IFD_EXIF tags within libexif version 0.6.21 can be exploited to exhaust available CPU resources.

Patch / fix

  • libexif Debian 14, Debian 13, Debian 12 0.6.21-5.1

debian advisories DEBIAN-CVE-2018-20030

  • libexif Ubuntu 16.04 LTS 0.6.21-2ubuntu0.2
  • libexif Ubuntu 18.04 LTS 0.6.21-4ubuntu0.2
  • libexif Ubuntu Pro 14.04 LTS 0.6.21-1ubuntu1+esm2

ubuntu advisories UBUNTU-CVE-2018-20030

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

  • libexif SLE Module for Package Hub 15 SP2, SLE Module for Package Hub 15 SP1, SLE Module for Desktop Applications 15 SP2 +1 more 0.6.22-5.6.1
  • libexif SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 0.6.22-8.9.1
  • libexif SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 0.6.17-2.14.7.2
  • libexif SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 0.6.21-5.3.1
  • libexif SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +17 more 0.6.21-8.6.1

suse advisories SUSE-SU-2020:1553-2SUSE-SU-2020:1553-1SUSE-SU-2020:1534-1SUSE-SU-2020:14294-1SUSE-SU-2020:0458-1SUSE-SU-2020:0457-1

  • libexif openSUSE Tumbleweed 0.6.23-1.2
  • libexif openSUSE Leap 15.1 0.6.22-lp151.4.6.1
  • libexif openSUSE Leap 15.1 0.6.21-lp151.4.3.1

opensuse advisories openSUSE-SU-2024:10939-1openSUSE-SU-2020:0793-1openSUSE-SU-2020:0264-1

  • libexif Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 0.6.22-r0

alpine advisories ALPINE-CVE-2018-20030

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libexif Arch Linux 0.6.22-1

arch linux advisories AVG-1166

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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-2018-20030 updated cvss 5.5

libexif: Input validation issue resulting in a denial of service

  • Red Hat Enterprise Linux 5 libexif Red Hat Enterprise Linux 6 libexif
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 libexif Red Hat Enterprise Linux 8 libexif
    affected: no fix available “Fix deferred”

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

3.80% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • Flexera Software LLC libexif

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel 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.