5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.933 High
EPSS
Percentile
99.1%
Ethereal contains multiple buffer overflows in the Universal Control Protocol (UCP) protocol dissector. These vulnerabilities could allow a remote, unauthenticated attacker to execute arbitrary code.
Ethereal is a network traffic analysis package. It includes the ability to decode packets containing UCP data. There are three buffer overflow vulnerabilities in the way the UCP protocol dissector decodes packets containing UCP data. These vulnerabilities could be exploited by a remote, unauthenticated attacker by sending a specially crafted UCP packet containing an overly long string, integer, or time field value. Exploitation of these vulnerabilities could result in arbitrary code execution.
According to the e-matters Security Advisory:
To exploit this vulnerability over the wire an attacker must be able to fit more than BUFSIZ bytes into one TCP packet. This means it is only exploitable on the wire if the system has a MTU bigger than BUFSIZ. BUFSIZ is 8192 on glibc systems, 1024 on BSD systems and 512 on Windows systems.
A remote, unauthenticated attacker could execute arbitrary code on the vulnerable system.
Upgrade
Upgrade to version 0.10.3 or later.
Note: Ethereal is considered BETA software at this time.
Disable Dissector
If you are unable to upgrade to version 0.10.3 or later, you can disable the UCP protocol dissector by performing the following actions in Ethereal:
(for Ethereal versions 0.9.x)
(for Ethereal versions 0.10.x)
125156
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Updated: March 25, 2004
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Please refer to the Ethereal Security Bulletin at <http://www.ethereal.com/appnotes/enpa-sa-00013.html>.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23125156 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
Ethereal credits Stefan Esser for reporting this vulnerability.
This document was written by Damon Morda.
CVE IDs: | CVE-2004-0176 |
---|---|
Severity Metric: | 9.82 Date Public: |