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CVE-2019-11743

LOW
3.7
CVSS Score
Published: September 27, 2019 at 05:17 PM UTC
Updated: June 17, 2026 at 02:13 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity
LOW3.7
Exploit prediction
EPSS 2%

Description

Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox· Mozilla
95%
v < 60.9.0v < 69v < 69.0
Affected range stops below 69, so it looks safe — our inference, not a vendor statement
Affected range stops below 69.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 60.9v < 68.168.0 ≤ v < 68.1.0
Affected range stops below 60.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 60.9.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.1.0, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 60.9v < 60.9.0v < 68.168.0 ≤ v < 68.1.0
Affected range stops below 60.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 60.9.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.1.0, so it looks safe — our inference, not a vendor statement

References (13)

Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1560495
Vendor Advisoryx_refsource_GENTOO
Source: [email protected]
https://security.gentoo.org/glsa/201911-07
Vendor Advisoryx_refsource_UBUNTU
Source: [email protected]
https://usn.ubuntu.com/4150-1/
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://w3c.github.io/navigation-timing

CVSS

3.7LOW[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-203

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