PT-2019-3405 · Mozilla+5 · Firefox Esr+7
Nils
·
Published
2019-05-21
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Updated
2024-12-12
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CVE-2019-11691
CVSS v2.0
10
Critical
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 67
Firefox ESR versions prior to 60.7
Thunderbird versions prior to 60.7
Description
A use-after-free issue can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main thread to be called after it has been freed. This results in a potentially exploitable crash, allowing a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.
Recommendations
For Firefox versions prior to 67, update to version 67 or later to resolve the issue.
For Firefox ESR versions prior to 60.7, update to version 60.7 or later to resolve the issue.
For Thunderbird versions prior to 60.7, update to version 60.7 or later to resolve the issue.
As a temporary workaround, consider disabling the use of
XMLHttpRequest (XHR) in event loops until a patch is available.Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Firefox
Firefox Esr
Red Hat
Suse
Thunderbird
Ubuntu