Vulnerability Monitor

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CVE-2019-11691

A use-after-free vulnerability 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. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

Published

2019-07-23T14:15:13.903

Last Modified

2024-11-21T04:21:36.167

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 67.0	Yes
Application	mozilla	firefox_esr	< 60.7	Yes
Application	mozilla	thunderbird	< 60.7	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1542465 Issue Tracking, Permissions Required, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2019-13/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2019-14/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2019-15/ Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1542465 Issue Tracking, Permissions Required, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2019-13/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2019-14/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2019-15/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)