Known exploited vulnerability
CVE-2019-11708
The short answer
CVE-2019-11708 affects Mozilla Firefox ESR and is rated critical (CVSS 10.0). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-05-23: attackers are using it, so patch it first.
What it is
Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.
Weakness: CWE-20.
Severity
10.0 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since May 23, 2022
Federal due date Jun 13, 2022
EPSS, next 30 days
56%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
Firefox ESR, Firefox, Thunderbird. NVD's record lists the exact affected versions.
References
- bugzilla.mozilla.org/show_bug.cgi?id=1559858 Issue TrackingVendor Advisory
- security.gentoo.org/glsa/201908-12 Third Party Advisory
- www.mozilla.org/security/advisories/mfsa2019-19/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-20/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1559858 Issue TrackingVendor Advisory
- security.gentoo.org/glsa/201908-12 Third Party Advisory
- www.mozilla.org/security/advisories/mfsa2019-19/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-20/ Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11708 US Government Resource
Questions
Is CVE-2019-11708 being exploited?
Yes. CISA added CVE-2019-11708 to its Known Exploited Vulnerabilities catalog on 2022-05-23, with a federal remediation due date of 2022-06-13.
How do I fix CVE-2019-11708?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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