CVE-2020-6805
HIGH
8.8
CVSS Score
Published: March 25, 2020 at 09:14 PM UTC
Updated: June 17, 2026 at 03:23 AM UTC
4 products affected across 2 vendorsUbuntu LinuxFirefoxThunderbird
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Severity
HIGH8.8
Exploit prediction
EPSS 1%
Description
When removing data about an origin whose tab was recently closed, a use-after-free could occur in the Quota manager, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%v < 74v < 74.0v < ESR68.6
Affected range stops below 74, so it looks safe — our inference, not a vendor statement
Affected range stops below 74.0, so it looks safe — our inference, not a vendor statement
Affected range stops below ESR68.6, so it looks safe — our inference, not a vendor statement
v < 68.6v < 68.6.0
Affected range stops below 68.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.6.0, so it looks safe — our inference, not a vendor statement
v < 68.6v < 68.6.0
Affected range stops below 68.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.6.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (6)
x_refsource_MISCIssue TrackingPermissions RequiredThird Party Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1610880Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4328-1/Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4335-1/x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-08/x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-09/x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-10/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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