Vulnerability in Mozilla Firefox
CVE-2019-17011
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.
Vulnerability class: Race Condition
EPSS: 0.015 (72.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Mozilla Firefox — versions before 71
- Mozilla Firefox Esr — versions before 68.3
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions before 68.3
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.10
- Opensuse Leap — versions 15.1
Weakness classification (CWE)
References
- security@mozilla.org (Exploit, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2019-17011?
- CVE-2019-17011 is a high-severity vulnerability in Mozilla Firefox, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2020-01-08.
- How severe is CVE-2019-17011?
- High severity. CVSS v3 base score is 7.5 out of 10.