CVE-2019-11691: Use After Free
First published: Tue May 21 2019(Updated: )
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. External Reference: <a href="https://www.mozilla.org/en-US/security/advisories/mfsa2019-14/#CVE-2019-11691">https://www.mozilla.org/en-US/security/advisories/mfsa2019-14/#CVE-2019-11691</a>
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <60.7 | 60.7 |
| Mozilla Firefox ESR | <60.7 | 60.7 |
| Mozilla Firefox | <67 | 67 |
| Mozilla Firefox | <67.0 | |
| Mozilla Firefox ESR | <60.7 | |
| Mozilla Thunderbird | <60.7 | |
| debian/firefox | 133.0.3-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.5.0esr-1~deb11u1 128.3.1esr-1~deb12u1 128.5.0esr-1~deb12u1 128.5.0esr-1 128.5.1esr-1 | |
| debian/thunderbird | 1:115.12.0-1~deb11u1 1:128.5.0esr-1~deb11u1 1:115.16.0esr-1~deb12u1 1:128.5.0esr-1~deb12u1 1:128.5.0esr-1 1:128.5.2esr-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1542465
- https://www.mozilla.org/security/advisories/mfsa2019-13/
- https://www.mozilla.org/security/advisories/mfsa2019-14/
- https://www.mozilla.org/security/advisories/mfsa2019-15/
- https://launchpad.net/bugs/cve/CVE-2019-11691
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-14/#CVE-2019-11691
- https://access.redhat.com/errata/RHSA-2019:1265
- https://access.redhat.com/errata/RHSA-2019:1267
- https://access.redhat.com/errata/RHSA-2019:1269
- https://access.redhat.com/errata/RHSA-2019:1308
- https://access.redhat.com/errata/RHSA-2019:1309
- https://access.redhat.com/errata/RHSA-2019:1310
- https://bugzilla.redhat.com/show_bug.cgi?id=1712617
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-15/
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-14/
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/#CVE-2019-11693
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/#CVE-2019-11691
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-15/#CVE-2019-11691
- https://security-tracker.debian.org/tracker/CVE-2019-11691
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11691
- https://nvd.nist.gov/vuln/detail/CVE-2019-11691
- https://ubuntu.com/security/CVE-2019-11691
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2019-9815
- CVE-2019-9816
- CVE-2019-9817
- CVE-2019-9818
- CVE-2019-9819
- CVE-2019-9820
- CVE-2019-11691
- CVE-2019-11692
- CVE-2019-11693
- CVE-2019-7317
- CVE-2019-9797
- CVE-2018-18511
- CVE-2019-11694
- CVE-2019-11698
- CVE-2019-5798
- CVE-2019-9800
- CVE-2019-9821
- CVE-2019-11695
- CVE-2019-11696
- CVE-2019-11697
- CVE-2019-11700
- CVE-2019-11699
- CVE-2019-11701
- CVE-2019-9814
Frequently Asked Questions
What is CVE-2019-11691?
CVE-2019-11691 is a use-after-free vulnerability that can occur when working with XMLHttpRequest (XHR) in an event loop, causing a potentially exploitable crash in Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
How does CVE-2019-11691 affect Mozilla Firefox?
CVE-2019-11691 affects Mozilla Firefox versions up to exclusive 67.
How does CVE-2019-11691 affect Mozilla Firefox ESR?
CVE-2019-11691 affects Mozilla Firefox ESR versions up to exclusive 60.7.
How does CVE-2019-11691 affect Thunderbird?
CVE-2019-11691 affects Thunderbird versions up to exclusive 60.7.
What is the severity of CVE-2019-11691?
The severity of CVE-2019-11691 is critical, with a CVSS score of 9.8.
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2019-11691
- agent/author
- collector/mozilla-advisory
- source/Mozilla
- agent/software-canonical-lookup
- agent/severity
- agent/software-canonical-lookup-request
- agent/weakness
- collector/nvd-index
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/tags
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- vendor/mozilla
- canonical/mozilla thunderbird
- canonical/mozilla firefox esr
- canonical/mozilla firefox
- package-manager/debian