CVE-2019-9791 - Mozilla: Type inference is incorrect for constructors entered through on-stack replacement with IonMonkey

Back Back to CVE browser

CRITICAL

Mozilla: Type inference is incorrect for constructors entered through on-stack replacement with IonMonkey

Published Apr 26, 2019

9.8

CRITICAL

CVSS 3.1

EPSS 19.91%

Description

The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Affected products

Vendor Mozilla Product Firefox Default
unknown
Affected
- ≥ unspecified, < 66
Vendor Mozilla Product Firefox ESR Default
unknown
Affected
- ≥ unspecified, < 60.6
Vendor Mozilla Product Thunderbird Default
unknown
Affected
- ≥ unspecified, < 60.6

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
Mozilla	Firefox	unknown	Affected ≥ unspecified, < 66
Mozilla	Firefox ESR	unknown	Affected ≥ unspecified, < 60.6
Mozilla	Thunderbird	unknown	Affected ≥ unspecified, < 60.6

Red Hat Enterprise Linux 6

firefox-0:60.6.0-3.el6_10

Fixed · RHSA-2019:0623
Red Hat Enterprise Linux 6

thunderbird-0:60.6.1-1.el6_10

Fixed · RHSA-2019:0680
Red Hat Enterprise Linux 7

firefox-0:60.6.0-3.el7_6

Fixed · RHSA-2019:0622
Red Hat Enterprise Linux 7

thunderbird-0:60.6.1-1.el7_6

Fixed · RHSA-2019:0681
Red Hat Enterprise Linux 8

firefox-0:60.6.1-1.el8

Fixed · RHSA-2019:0966
Red Hat Enterprise Linux 8

thunderbird-0:60.6.1-1.el8

Fixed · RHSA-2019:1144

Product	Package	State	Advisory
Red Hat Enterprise Linux 6	firefox-0:60.6.0-3.el6_10	Fixed	RHSA-2019:0623
Red Hat Enterprise Linux 6	thunderbird-0:60.6.1-1.el6_10	Fixed	RHSA-2019:0680
Red Hat Enterprise Linux 7	firefox-0:60.6.0-3.el7_6	Fixed	RHSA-2019:0622
Red Hat Enterprise Linux 7	thunderbird-0:60.6.1-1.el7_6	Fixed	RHSA-2019:0681
Red Hat Enterprise Linux 8	firefox-0:60.6.1-1.el8	Fixed	RHSA-2019:0966
Red Hat Enterprise Linux 8	thunderbird-0:60.6.1-1.el8	Fixed	RHSA-2019:1144

Remediation

Red Hat statement

In general, this flaw be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

Weaknesses (1)

CWE-843

References (12)

https://access.redhat.com/errata/RHSA-2019:0966
vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:1144
vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2019-9791
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1530958
x_refsource_MISCExploitIssue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1690676
Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-19153
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-9791
https://www.cve.org/CVERecord?id=CVE-2019-9791
https://www.mozilla.org/en-US/security/advisories/mfsa2019-08/#CVE-2019-9791
https://www.mozilla.org/security/advisories/mfsa2019-07/
x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-08/
x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://access.redhat.com/errata/RHSA-2019:0966		vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:1144		vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2019-9791		Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1530958		x_refsource_MISCExploitIssue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1690676		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-19153		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-9791
https://www.cve.org/CVERecord?id=CVE-2019-9791
https://www.mozilla.org/en-US/security/advisories/mfsa2019-08/#CVE-2019-9791
https://www.mozilla.org/security/advisories/mfsa2019-07/		x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-08/		x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/		x_refsource_MISCVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mozilla

Published Apr 26, 2019

Updated Aug 4, 2024

Reserved Mar 14, 2019

Link CVE-2019-9791

CISA Vulnrichment

No data

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2019-9791

Red Hat

Severity Critical

Public date Mar 20, 2019

Bugzilla 1690676

Link CVE-2019-9791

ENISA EUVD

Assigner mozilla

Published Apr 26, 2019

Updated Aug 4, 2024

Link EUVD-2019-19153

GitHub

No data