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Info |
Last Modified |
| 6 months ago |
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Description |
A remote overflow exists in Exim. The issue is due to a boundary error within a routine for header syntax checking resulting in a buffer overflow. With a specially crafted request, an attacker can cause arbitrary code execution resulting in a loss of confidentiality and integrity.
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Classification |
Location:
Remote/Network Access Required
Attack Type:
Input Manipulation
Impact:
Loss of Confidentiality,
Loss of Integrity
Exploit:
Exploit Available
Disclosure:
OSVDB Verified
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Technical |
If the "verify = header_syntax" is configured in Exim, a buffer overflow can be triggered by email headers.
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Solution |
Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround:
Make sure you don't have the following options in the exim configuration file:
For version 3.35:
headers_check_syntax
For version 4.32:
require verify = header_syntax
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Products |
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Exim
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3.35 |
4.32 |
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Credit |
- Georgi Guninski - guninski
 guninski.com - Personal Page
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BlogsProvided by Technorati
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None found at this time
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