CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%
Adobe Reader and Acrobat contain a stack buffer overflow in the util.printf()
JavaScript function, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
Adobe Reader is software designed to view Portable Document Format (PDF) files. Adobe Acrobat is software that can create PDF files. Adobe Reader and Acrobat support JavaScript in PDF documents. According to the Acrobat Forms JavaScript Object Specification, the util.printf()
function “… will format one or more values as a string according to a format string. This is similar to the C function of the same name.”
Adobe Reader and Acrobat fail to sufficiently validate input to the util.printf()
JavaScript function, which can result in a stack buffer overflow. Exploit code for this vulnerability is publicly available.
By convincing a user to open a specially-crafted PDF file, a remote, unauthenticated attacker may be able to execute arbitrary code. This can happen in several ways, such as opening an email attachment or viewing a web page.
Apply an update
This issue is addressed in Adobe Reader and Adobe Acrobat 8.1.3. More details are available in Adobe Security Bulletin APSB08-019. Please also consider the following workarounds to help mitigate this and other vulnerabilities in Adobe Reader:
Disable the displaying of PDF documents in the web browser
Preventing PDF documents from opening inside a web browser may mitigate this vulnerability. If this workaround is applied to updated versions of the Adobe reader, it may mitigate future vulnerabilities.
To prevent PDF documents from automatically being opened in a web browser:
Edit
menu.preferences
option.Internet
section."``Display PDF in browser``"
check box.Ubuntu users and administrators can prevent Adobe Reader from automatically opening PDF files inside their web browser by removing the mozilla-acroread package.
Prevent Internet Explorer from automatically opening PDF documents
The installer for Adobe Reader and Acrobat configures Internet Explorer to automatically open PDF files without any user interaction. This behavior can be reverted to the safer option of prompting the user by importing the following as a .REG file:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\AcroExch.Document.7]
"EditFlags"=hex:00,00,00,00
Disable JavaScript in Adobe Reader and Acrobat
Disabling Javascript may prevent this vulnerability from being exploited. Acrobat JavaScript can be disabled in the General preferences dialog (Edit
-> Preferences
-> JavaScript
and un-check Enable Acrobat JavaScript
).
Do not open untrusted PDF files
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Notified: May 22, 2008 Updated: November 07, 2008
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
This vulnerability was reported by Will Dormann of the CERT/CC, based on information provided by Dyon Balding of Secunia Research.
This document was written by Will Dormann.
CVE IDs: | CVE-2008-2992 |
---|---|
Severity Metric: | 24.62 Date Public: |
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%