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Fencer Vulns
high 7.8

CVE-2019-17009 json

When running, the updater service wrote status and log files to an unrestricted location; potentially allowing an unprivileged process to l…

published 2020-01-08 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7483

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

When running, the updater service wrote status and log files to an unrestricted location; potentially allowing an unprivileged process to locate and exploit a vulnerability in file handling in the updater service. *Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.*. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

Patch / fix

  • mozilla firefox 71.0
  • mozilla firefox_esr 68.3
  • mozilla thunderbird 68.3
  • MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +17 more 68.3.0-109.98.1
  • MozillaThunderbird SLE Workstation Extension 15 SP1, SLE Workstation Extension 15 68.3.0-3.61.2
  • MozillaFirefox SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 68.3.0-3.62.2
  • mozilla-nss SLES 11 SP4-LTSS 3.47.1-38.12.1
  • mozilla-nspr SLES 11 SP4-LTSS 4.23-29.9.1
  • MozillaFirefox SLES 11 SP4-LTSS 68.3.0-78.54.1

suse advisories SUSE-SU-2019:14260-1SUSE-SU-2019:3347-1SUSE-SU-2019:3339-1SUSE-SU-2019:3337-1

  • MozillaThunderbird openSUSE Leap 15.1 68.3.0-lp151.2.19.1
  • MozillaFirefox openSUSE Leap 15.1 68.3.0-lp151.2.21.1

opensuse advisories openSUSE-SU-2020:0003-1openSUSE-SU-2020:0002-1

  • firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +10 more 68.3.0-r0

alpine advisories ALPINE-CVE-2019-17009

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

  • firefox Arch Linux 71.0-1

arch linux advisories AVG-1071

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-2019-17009 updated cvss 7.8

Mozilla: Updater temporary files accessible to unprivileged processes

  • Red Hat Enterprise Linux 5 firefox, thunderbird
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 6 firefox, thunderbird Red Hat Enterprise Linux 7 firefox, thunderbird Red Hat Enterprise Linux 8 firefox, thunderbird
    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

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Mozilla Thunderbird
  • Mozilla Firefox ESR
  • Mozilla Firefox

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.