CVE-2015-6991: Buffer Overflow
First published: Fri Oct 23 2015(Updated: )
FontParser in Apple iOS before 9.1 and OS X before 10.11.1 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font file, a different vulnerability than CVE-2015-6976, CVE-2015-6977, CVE-2015-6978, CVE-2015-6990, CVE-2015-6993, CVE-2015-7008, CVE-2015-7009, CVE-2015-7010, and CVE-2015-7018.
Credit: product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple iOS and macOS | <=10.11.0 | |
| iStyle @cosme iPhone OS | <=9.0.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2015-6991?
CVE-2015-6991 is considered a high severity vulnerability due to the potential for remote code execution and denial of service.
How do I fix CVE-2015-6991?
To fix CVE-2015-6991, update to Apple iOS version 9.1 or later and OS X version 10.11.1 or later.
What types of systems are affected by CVE-2015-6991?
CVE-2015-6991 affects Apple iOS versions prior to 9.1 and OS X versions prior to 10.11.1.
What are the consequences of exploiting CVE-2015-6991?
Exploiting CVE-2015-6991 can lead to arbitrary code execution or a denial of service via memory corruption.
Is there a workaround for CVE-2015-6991 if I cannot update?
There are no known effective workarounds for CVE-2015-6991; updating the affected software is recommended.
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- version/apple ios and macos/10.11.0
- canonical/istyle @cosme iphone os
- version/istyle @cosme iphone os/9.0.2