ESB-2021.2152 – [Win] Mozilla Firefox: Multiple vulnerabilities

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AUSCERT External Security Bulletin Redistribution

ESB-2021.2152
MFSA 2021-27 Security Vulnerabilities fixed in Firefox 89.0.1
17 June 2021

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AusCERT Security Bulletin Summary
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Product: Mozilla Firefox
Publisher: Mozilla
Operating System: Windows
Impact/Access: Reduced Security — Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-29968

Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2021-27/

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Mozilla Foundation Security Advisory 2021-27

Security Vulnerabilities fixed in Firefox 89.0.1

Announced: June 16, 2021
Impact: moderate
Products: Firefox
Fixed in: Firefox 89.0.1

# CVE-2021-29968: Out of bounds read when drawing text characters onto a Canvas

Reporter: Pascal Chevrel
Impact: moderate

Description

When drawing text onto a canvas with WebRender disabled, an out of bounds read
could occur.
This bug only affects Firefox on Windows. Other operating systems are
unaffected.

References

o Bug 1712047

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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT’s members. As
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
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On call after hours for member emergencies only.
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