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NVD Vulnerability Details :
CVE-2019-17026
Analyzed
More InfoOfficial Page
Source-security@mozilla.org
View Known Exploited Vulnerability (KEV) details
Published At-02 Mar, 2020 | 05:15
Updated At-04 Nov, 2025 | 14:34

Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
2021-11-032022-05-03Mozilla Firefox And Thunderbird Type Confusion VulnerabilityApply updates per vendor instructions.
Date Added: 2021-11-03
Due Date: 2022-05-03
Vulnerability Name: Mozilla Firefox And Thunderbird Type Confusion Vulnerability
Required Action: Apply updates per vendor instructions.
Metrics
TypeVersionBase scoreBase severityVector
Primary3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Secondary3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary2.06.8MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
Type: Primary
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Type: Primary
Version: 2.0
Base score: 6.8
Base severity: MEDIUM
Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P
CPE Matches
Mozilla Corporation
mozilla
>>firefox>>Versions before 68.4.1(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions before 72.0.1(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 68.4.1(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Canonical Ltd.
canonical
>>ubuntu_linux>>16.04
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Weaknesses
CWE IDTypeSource
CWE-843Primarynvd@nist.gov
CWE-843Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-843
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-843
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.htmlsecurity@mozilla.org
Exploit
Third Party Advisory
VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443security@mozilla.org
Issue Tracking
https://security.gentoo.org/glsa/202003-02security@mozilla.org
Third Party Advisory
https://usn.ubuntu.com/4335-1/security@mozilla.org
Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-03/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-04/security@mozilla.org
Vendor Advisory
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.htmlaf854a3a-2127-422b-91ae-364da2661108
Exploit
Third Party Advisory
VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
https://security.gentoo.org/glsa/202003-02af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/4335-1/af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-03/af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-04/af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17026134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource
Hyperlink: http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
Source: security@mozilla.org
Resource:
Exploit
Third Party Advisory
VDB Entry
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
Source: security@mozilla.org
Resource:
Issue Tracking
Hyperlink: https://security.gentoo.org/glsa/202003-02
Source: security@mozilla.org
Resource:
Third Party Advisory
Hyperlink: https://usn.ubuntu.com/4335-1/
Source: security@mozilla.org
Resource:
Third Party Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-03/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-04/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Exploit
Third Party Advisory
VDB Entry
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Issue Tracking
Hyperlink: https://security.gentoo.org/glsa/202003-02
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://usn.ubuntu.com/4335-1/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-03/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-04/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Vendor Advisory
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17026
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
US Government Resource
Change History
0Changes found
Details not found