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Adobe Acrobat and Reader contain a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system.
The vulnerability is due to improper bounds checking of certain bitmap files that are embedded in a .pdf file. An unauthenticated, remote attacker could exploit the vulnerability by convincing a targeted user to visit a malicious web page or execute a crafted .pdf file. The processing of such files could allow the attacker to execute arbitrary code with the privileges of the user.
Adobe has confirmed this vulnerability and released updated software.
Indicators of Compromise
The following Adobe products are vulnerable:
Adobe Reader versions 9.4.1 and prior, versions 8.2.5 and prior, and version 10.0
Acrobat Standard and Professional versions 9.4.1 and prior and version 10.0
Acrobat Standard and Professional versions 8.2.5 and prior
Acrobat Professional Extended versions 9.4.1 and prior
Acrobat 3D versions 8.2.5 and prior
The vulnerability is in the 2d.dll component that is responsible for processing run-length encoded (RLE8) bitmap images. The affected component erroneously allocates the memory buffer by incorrectly assuming the minimum values for the bitmap height and width. This action could allow the attacker to copy malicious data in a fixed-sized buffer, causing an overflow that corrupts memory.
An unauthenticated, remote attacker could exploit the vulnerability by convincing a user to visit a malicious web page or execute a crafted .pdf file. The processing of the file could allow the attacker to execute arbitrary code with the privileges of the user.
To exploit the vulnerability, the attacker must convince a user to visit a specific website or execute a crafted .pdf file. To achieve this objective, an attacker may use social engineering tactics, such as sending a link to the site in an e-mail message, instant messaging, or other forms of communication.
Administrators are advised to apply the appropriate updates.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Users should verify that unsolicited links are safe to follow.
Administrators are advised to monitor critical systems.
Adobe has re-released a security bulletin at the following link: APSB11-03
Red Hat has released a security advisory at the following link: RHSA-2011:0301
Adobe has released updates via software automatic update mechanisms or at the following links:
Adobe has re-released a security bulletin with updated software to address the BMP RLE_8 decompression arbitrary code execution vulnerability. Red Hat has also released a security advisory and updated packages to address this vulnerability.
2011-February-24 13:40 GMT
Adobe Acrobat and Reader contain a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system. Updates are available.
Red Hat Enterprise Linux Workstation Supplementary
6 (IA-32, x86_64)
5 (IA-32, x86_64)
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