Buffer overflow in Mozilla Firefox
CVE-2019-9810
Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.297 (98.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.295 · newest: 0.297 · change: +0.002
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Enterprise Linux Eus — versions 8.1, 8.2, 8.4
- Red Hat Enterprise Linux Server Aus — versions 8.2, 8.4
- Red Hat Enterprise Linux Server Tus — versions 8.2, 8.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2019-09/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-10/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-12/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHSA-2019:0966 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:1144 (vendor-advisory, Third Party Advisory)
- packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Explo… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-9810?
- CVE-2019-9810 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2019-04-26.
- How severe is CVE-2019-9810?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2019-9810 known to be exploited?
- 37 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.