Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-11756

Use After Free

Published: Jan 08, 2020 | Modified: Nov 21, 2024
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
7.1 MODERATE
CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-11756
CWEhttps://cwe.mitre.org/data/definitions/416.html

Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*71.0 (excluding)
Red Hat Enterprise Linux 7RedHatnspr-0:4.25.0-2.el7_9*
Red Hat Enterprise Linux 7RedHatnss-0:3.53.1-3.el7_9*
Red Hat Enterprise Linux 7RedHatnss-softokn-0:3.53.1-6.el7_9*
Red Hat Enterprise Linux 7RedHatnss-util-0:3.53.1-1.el7_9*
Red Hat Enterprise Linux 7.4 Advanced Update SupportRedHatnss-softokn-0:3.28.3-10.el7_4*
Red Hat Enterprise Linux 7.4 Telco Extended Update SupportRedHatnss-softokn-0:3.28.3-10.el7_4*
Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsRedHatnss-softokn-0:3.28.3-10.el7_4*
Red Hat Enterprise Linux 7.6 Extended Update SupportRedHatnss-0:3.36.0-9.el7_6*
Red Hat Enterprise Linux 7.6 Extended Update SupportRedHatnss-softokn-0:3.36.0-7.el7_6*
Red Hat Enterprise Linux 7.7 Extended Update SupportRedHatnss-softokn-0:3.44.0-9.el7_7*
Red Hat Enterprise Linux 8RedHatnspr-0:4.25.0-2.el8_2*
Red Hat Enterprise Linux 8RedHatnss-0:3.53.1-11.el8_2*
Red Hat OpenShift DoRedHatopenshiftdo/odo-init-image-rhel7:1.1.3-2*
FirefoxUbuntubionic*
FirefoxUbuntudevel*
FirefoxUbuntudisco*
FirefoxUbuntueoan*
FirefoxUbuntufocal*
FirefoxUbuntugroovy*
FirefoxUbuntuhirsute*
FirefoxUbuntuimpish*
FirefoxUbuntujammy*
FirefoxUbuntukinetic*
FirefoxUbuntulunar*
FirefoxUbuntumantic*
FirefoxUbuntunoble*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*
Mozjs38Ubuntubionic*
Mozjs38Ubuntuesm-apps/bionic*
Mozjs38Ubuntuupstream*
Mozjs52Ubuntubionic*
Mozjs52Ubuntudisco*
Mozjs52Ubuntueoan*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs52Ubuntufocal*
Mozjs52Ubuntugroovy*
Mozjs52Ubuntuupstream*
Mozjs60Ubuntudisco*
Mozjs60Ubuntueoan*
Mozjs60Ubuntuupstream*

Potential Mitigations

References

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