Medium severity · published Jan 8, 2020
CVE-2019-17021
During the initialization of a new content process, a race condition occurs that can allow a content process to disclose heap addresses from the parent process
5.3
CVSS
1.9%
EPSS
No
On KEV
Description
During the initialization of a new content process, a race condition occurs that can allow a content process to disclose heap addresses from the parent process. *Note: this issue only occurs on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 72.0 · source: NVD
FE
Firefox Esr · Mozilla
before 68.4 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-17021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-17021
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00029.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00043.html
Exploit
http://packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunderbird-Updates.html
Exploit
https://bugzilla.mozilla.org/show_bug.cgi?id=1599008
Mailing List
https://seclists.org/bugtraq/2020/Jan/18
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-01/
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