HTTP: Mozilla Firefox nsDocShell Use After Free
This signature detects attempts to exploit a known vulnerability against Mozilla Firefox. A successful attack can lead to arbitrary code execution.
Extended Description
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Affected Products
Mozilla firefox_esr
Short Name
HTTP:BROWSER:FIREFX-NCDCSHL-UAF
Severity
Minor
Recommended
False
Recommended Action
None
Category
HTTP
Keywords
After CVE-2020-6819 CVE-2020-6820 Firefox Free Mozilla Use nsDocShell
Release Date
05/19/2020
Supported Platforms
mx-19.3
vmx-19.3
vsrx-19.2
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vmx-19.4
mx-19.4
srxevo-25.4
vsrx-26.2
srx-26.2
srx-branch-26.2
vsrx3bsd-26.2
mx-12.3
srx-12.3
srx-branch-12.3
vsrx-12.3
Sigpack Version
3590
False Positive
Rarely
Vendors
Mozilla
CVSS Score
6.8