CVE-2019-17005

Name: CVE-2019-17005
Creator: NVD / NIST
Published: 2020-01-08T22:15:11.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.89%

Last modified Jun 17, 2026

CVE-2019-17005 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.. EPSS estimates a 1.89% chance of exploitation in the next 30 days.

Description

The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.89%

76.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 71.0
Mozilla	Firefox Esr	< 68.3
Mozilla	Thunderbird	< 68.3
Opensuse	Leap	15.1
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.htmlIssue Tracking, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.htmlIssue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0292Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0295Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1584170Exploit, Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/202003-02Third Party Advisory
https://security.gentoo.org/glsa/202003-10Third Party Advisory
https://usn.ubuntu.com/4241-1/Third Party Advisory
https://usn.ubuntu.com/4335-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-36/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-37/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-38/Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.htmlIssue Tracking, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.htmlIssue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0292Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0295Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1584170Exploit, Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/202003-02Third Party Advisory
https://security.gentoo.org/glsa/202003-10Third Party Advisory
https://usn.ubuntu.com/4241-1/Third Party Advisory
https://usn.ubuntu.com/4335-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-36/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-37/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-38/Vendor Advisory

Timeline

Published: Jan 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17005?

How severe is CVE-2019-17005?

CVE-2019-17005 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.89% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17005?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17005?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST