CVE-2010-2640: Input Validation
An array index error in the parser for PK font files, which is used for rendering DVI files, in the GNOME evince document viewer can lead to local or remote code execution. Due to insufficient bounds checks when writing to elements in an array, it's possible to overwrite the address of a function pointer, leading to possible arbitrary code execution.
Common Vulnerabilities and Exposures assigned an identifier CVE-2010-2640 to this issue.
The vulnerability is present in the code that handles loading of fonts used by DVI files.To exploit you need two files, a DVI file and the malicious font. The vulnerability is triggered not only by opening the document in evince, but also by browsing to a folder which contains the malicious files, where evince thumbnailer will load the malicious file to generate a thumbnail for it.
Acknowledgements:
Red Hat would like to thank the Evince development team for reporting this issue. Upstream acknowledges Jon Larimer of IBM X-Force as the original reporter.
Other sources
Array index error in the PK font parser in the dvi-backend component in Evince 2.32 and earlier allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted font in conjunction with a DVI file that is processed by the thumbnailer.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2010-2640?
CVE-2010-2640 has a medium severity rating, allowing for potential local or remote code execution due to an array index error.
How do I fix CVE-2010-2640?
To fix CVE-2010-2640, update the evince package to version 2.28.2-14.el6_0.1 or later as provided by Red Hat.
What software is affected by CVE-2010-2640?
CVE-2010-2640 affects several versions of Red Hat Evince, including 0.1 up to 2.32.
Can CVE-2010-2640 be exploited remotely?
Yes, CVE-2010-2640 can potentially be exploited remotely through malicious PK font files.
What kind of vulnerabilities does CVE-2010-2640 involve?
CVE-2010-2640 involves an array index error that can lead to code execution vulnerabilities.