Mozilla Firefox Information Disclosure Vulnerability

CheckOps priority index

4.6/10 Patch within 7 days

Severity6.5

Probability0.7

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 6.7% higher than 93.9% of CVEs

CVSS 3.1 6.5 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:

Exploited for 1,706 days 03 Mar 2022

CISA due date 24 Mar 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)03 Mar 2022
Exploited in EUVD (ENISA)03 Mar 2022
Used by ransomwareno
EPSS above 10 %6.7%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 do not properly initialize data structures for the nsDOMSVGZoomEvent::mPreviousScale and nsDOMSVGZoomEvent::mNewScale functions, which allows remote attackers to obtain sensitive information from process memory via a crafted web site.

Affected products

Firefox

Weaknesses (CWE)

CWE-119

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

16 May 2013
Published
03 Mar 2022
Exploitation reported (ENISA)
03 Mar 2022
Added to the KEV catalog
24 Mar 2022
CISA remediation due date

References

Other exploited vulnerabilities from the same vendor

CVE-2010-3765Mozilla Multiple Products Remote Code Execution Vulnerability
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CVE-2024-9680Mozilla Firefox Use-After-Free Vulnerability
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CVE-2016-9079Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
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CVE-2015-4495Mozilla Firefox Security Feature Bypass Vulnerability
8.0 · Background exploitation
CVE-2019-11708Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability
8.1 · Background exploitation
CVE-2019-11707Mozilla Firefox and Thunderbird Type Confusion Vulnerability
7.1 · Background exploitation