Known exploited vulnerability
CVE-2019-11707
The short answer
CVE-2019-11707 affects Mozilla Firefox ESR and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-05-23: attackers are using it, so patch it first.
What it is
A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.
Weakness: CWE-843.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since May 23, 2022
Federal due date Jun 13, 2022
EPSS, next 30 days
38%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- 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=1544386 Issue TrackingPermissions RequiredVendor Advisory
- security.gentoo.org/glsa/201908-12 Third Party Advisory
- www.mozilla.org/security/advisories/mfsa2019-18/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-20/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1544386 Issue TrackingPermissions RequiredVendor Advisory
- security.gentoo.org/glsa/201908-12 Third Party Advisory
- www.mozilla.org/security/advisories/mfsa2019-18/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-20/ Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11707 US Government Resource
Questions
Is CVE-2019-11707 being exploited?
Yes. CISA added CVE-2019-11707 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-2019-11707?
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.
Related
Latest CVEs this week
Critical and High CVEs from the last 7 days, with KEV and EPSS.
Exploited vulnerabilities by vendor
Every vendor in CISA's KEV catalog, with its count.
Mozilla exploited vulnerabilities
Everything CISA lists as exploited for Mozilla.
Vulnerability watch
A briefing and a fix pull request when an advisory hits your dependencies.
Know the day a CVE lands in your code
Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.