CVE-2019-17011

Public Exploit

Description

Under certain conditions, when retrieving a document from a DocShell in the antitracking code, a race condition could cause a use-after-free condition and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.13% Top 25%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1591334 issue tracking exploit vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-36/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-38/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-37/ vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html mailing list third party advisory vendor advisory
https://usn.ubuntu.com/4241-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0292 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0295 third party advisory vendor advisory
https://security.gentoo.org/glsa/202003-02 third party advisory vendor advisory
https://security.gentoo.org/glsa/202003-10 third party advisory vendor advisory
https://usn.ubuntu.com/4335-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-17011?
CVE-2019-17011 has been scored as a high severity vulnerability.
How to fix CVE-2019-17011?
To fix CVE-2019-17011, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-17011 being actively exploited in the wild?
It is possible that CVE-2019-17011 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-17011?
CVE-2019-17011 affects Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox.
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