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CVE Vulnerabilities

CVE-2019-9795

Reachable Assertion

Published: Apr 26, 2019 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
9.8 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-9795
CWEhttps://cwe.mitre.org/data/definitions/617.html

A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Weakness

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*66.0 (excluding)
Firefox_esrMozilla*60.6 (excluding)
ThunderbirdMozilla*60.6 (excluding)
Red Hat Enterprise Linux 6RedHatfirefox-0:60.6.0-3.el6_10*
Red Hat Enterprise Linux 6RedHatthunderbird-0:60.6.1-1.el6_10*
Red Hat Enterprise Linux 7RedHatfirefox-0:60.6.0-3.el7_6*
Red Hat Enterprise Linux 7RedHatthunderbird-0:60.6.1-1.el7_6*
Red Hat Enterprise Linux 8RedHatfirefox-0:60.6.1-1.el8*
Red Hat Enterprise Linux 8RedHatthunderbird-0:60.6.1-1.el8*
FirefoxUbuntubionic*
FirefoxUbuntucosmic*
FirefoxUbuntudevel*
FirefoxUbuntudisco*
FirefoxUbuntueoan*
FirefoxUbuntufocal*
FirefoxUbuntugroovy*
FirefoxUbuntuhirsute*
FirefoxUbuntuimpish*
FirefoxUbuntujammy*
FirefoxUbuntukinetic*
FirefoxUbuntulunar*
FirefoxUbuntumantic*
FirefoxUbuntunoble*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*
Mozjs38Ubuntubionic*
Mozjs38Ubuntuesm-apps/bionic*
Mozjs38Ubuntuupstream*
Mozjs52Ubuntubionic*
Mozjs52Ubuntucosmic*
Mozjs52Ubuntudisco*
Mozjs52Ubuntueoan*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs52Ubuntufocal*
Mozjs52Ubuntugroovy*
Mozjs52Ubuntuupstream*
Mozjs60Ubuntucosmic*
Mozjs60Ubuntudisco*
Mozjs60Ubuntueoan*
Mozjs60Ubuntuupstream*
ThunderbirdUbuntubionic*
ThunderbirdUbuntucosmic*
ThunderbirdUbuntudevel*
ThunderbirdUbuntudisco*
ThunderbirdUbuntueoan*
ThunderbirdUbuntufocal*
ThunderbirdUbuntugroovy*
ThunderbirdUbuntuhirsute*
ThunderbirdUbuntuimpish*
ThunderbirdUbuntujammy*
ThunderbirdUbuntukinetic*
ThunderbirdUbuntulunar*
ThunderbirdUbuntumantic*
ThunderbirdUbuntunoble*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuupstream*
ThunderbirdUbuntuxenial*

Extended Description

While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service. For example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.

Potential Mitigations

References

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