Symantec Internet Security Threat Report -

Professional Security Resources: Symantec Internet Security Threat Report (2/4)

Author: Max : 2007/3/24

Symantec Internet Security Threat Report

Vulnerability Trends Highlights

Symantec documented 2,526 vulnerabilities in the second half of 2006, 12 percent higher than the first half of 2006, and a higher volume than in any other previous six-month period.2
Symantec classified four percent of all vulnerabilities disclosed during this period as high severity, 69 percent were medium severity, and 27 percent were low severity.
Sixty-six percent of vulnerabilities disclosed during this period affected Web applications.
Seventy-nine percent of all vulnerabilities documented in this reporting period were considered to be easily exploitable.

Seventy-seven percent of all easily exploitable vulnerabilities affected Web applications, and seven percent affected servers.
Ninety-four percent of all easily exploitable vulnerabilities disclosed in the second half of 2006 were remotely exploitable.
In the second half of 2006, all the operating system vendors that were studied had longer average patch development times than in the first half of the year.
Sun Solaris had an average patch development time of 122 days in the second half of 2006, the highest of any operating system.
Sixty-eight percent of the vulnerabilities documented during this period were not confirmed by the affected vendor.
The window of exposure for vulnerabilities affecting enterprise vendors was 47 days.
Symantec documented 54 vulnerabilities in Microsoft Internet Explorer, 40 in the Mozilla browsers, and four each in Apple Safari and Opera.
Mozilla had a window of exposure of two days, the shortest of any Web browser during this period.
Twenty-five percent of exploit code was released less than one day after vulnerability publication.
Thirty-one percent was released in one to six days after vulnerability publication.
Symantec documented 12 zero-day vulnerabilities during this period, a significant increase from the one documented in the first half of 2006.
Symantec documented 168 vulnerabilities in Oracle database implementations, more than any other database.

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