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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Tcpdump Vulnerabilities in ISAKMP Parsing
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200404-03
(Tcpdump Vulnerabilities in ISAKMP Parsing)
There are two specific vulnerabilities in tcpdump, outlined in [ reference
1 ]. In the first scenario, a possible hacker may send a specially-crafted ISAKMP
Delete packet which causes tcpdump to read past the end of its buffer. In
the second scenario, a possible hacker may send an ISAKMP packet with the wrong
payload length, again causing tcpdump to read past the end of a buffer.
Remote attackers could potentially cause tcpdump to crash or execute
arbitrary code as the 'pcap' user.
There is no known workaround at this time. All tcpdump users are encouraged
to upgrade to the latest available version.
All tcpdump users should upgrade to the latest available version.
ADDITIONALLY, the net-libs/libpcap package should be upgraded.
# emerge sync
# emerge -pv ">=net-libs/libpcap-0.8.3-r1" ">=net-analyzer/tcpdump-3.8.3-r1"
# emerge ">=net-libs/libpcap-0.8.3-r1" ">=net-analyzer/tcpdump-3.8.3-r1"
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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