Vulnerability Details : CVE-2017-8691
Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow an attacker to execute code remotely on a target system when the Windows font library fails to properly handle specially crafted embedded fonts, aka "Express Compressed Fonts Remote Code Execution Vulnerability."
Vulnerability category: OverflowExecute code
Exploit prediction scoring system (EPSS) score for CVE-2017-8691
Probability of exploitation activity in the next 30 days: 14.36%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 95 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-8691
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
NIST |
|
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2017-8691
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The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-8691
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https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8691
CVE-2017-8691 | Express Compressed Fonts Remote Code Execution VulnerabilityPatch;Vendor Advisory
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http://www.securitytracker.com/id/1039096
Microsoft Windows Font Library Flaw Lets Remote Users Execute Arbitrary Code - SecurityTrackerThird Party Advisory;VDB Entry
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http://www.securityfocus.com/bid/100090
Microsoft Windows Express Compressed Fonts CVE-2017-8691 Remote Code Execution VulnerabilityThird Party Advisory;VDB Entry
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https://fortiguard.com/zeroday/FG-VD-17-142
Fortinet Discovers Windows Font Library Memory Corruption Vulnerability | FortiGuard
Products affected by CVE-2017-8691
- cpe:2.3:o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_7:*:sp1:*:*:*:*:*:*