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tcpdump print-bgp.c Buffer Overflow Vulnerability Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA26135  
Release Date: 2007-07-19

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Workaround

Software:tcpdump 3.x

CVE reference:CVE-2007-3798 (Secunia mirror)



Description:
mu-b has reported a vulnerability in tcpdump, which potentially can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to the incorrect use of the return value of "snprintf()" in print-bgp.c. This can be exploited to cause a buffer overflow by sending specially crafted BGP packets.

Successful exploitation may allow the execution of arbitrary code.

The vulnerability is reported in version 3.9.6. Other versions may also be affected.

Solution:
Fixed in the SVN repository.
http://cvs.tcpdump.org/cgi-bin/cvsweb...t-bgp.c?r1=1.91.2.11&r2=1.91.2.12

Provided and/or discovered by:
mu-b, digit-labs.org

Original Advisory:
http://www.digit-labs.org/files/exploits/private/tcpdump-bgp.c



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

7 Related Secunia Security Advisories

1. tcpdump 802.11 "parse_elements()" Off-By-One Vulnerability
2. tcpdump BGP Denial of Service Vulnerability
3. tcpdump Multiple Denial of Service Vulnerabilities
4. TCPDUMP ISAKMP Payload Handling Denial of Service Vulnerabilities
5. tcpdump ISAKMP and RADIUS Packet Handling Vulnerabilities
6. tcpdump Denial of Service
7. tcpdump / libpcap trojan horse versions


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