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CVE-2018-12371

HIGH
8.8
CVSS Score
Published: July 9, 2020 at 01:54 PM UTC
Updated: June 17, 2026 at 01:37 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity
HIGH8.8
Exploit prediction
EPSS 1%

Description

An integer overflow vulnerability in the Skia library when allocating memory for edge builders on some systems with at least 16 GB of RAM. This results in the use of uninitialized memory, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 60.1, Thunderbird < 60, and Firefox < 61.

Affected

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

Firefox· Mozilla
95%
v < 60.1.0v < 61v < 61.0
Affected range stops below 61, so it looks safe — our inference, not a vendor statement
Affected range stops below 61.0, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 60v < 60.0
Affected range stops below 60, so it looks safe — our inference, not a vendor statement
Affected range stops below 60.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
60%
v < 60.1
Affected range stops below 60.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 60.1.0, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1465686
x_refsource_CONFIRMx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2018-15/
x_refsource_CONFIRMx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2018-16/
x_refsource_CONFIRMx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2018-19/

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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