Untrusted search path vulnerability in unspecified components in Symantec LiveUpdate for Macintosh 3.0.0 through 3.5.0 do not set the execution path, which allows local users to gain privileges via a Trojan horse program.

Symantec LiveUpdate 1.5 and earlier in Norton Antivirus stores usernames and passwords for a local LiveUpdate server in cleartext in the registry, which may allow remote attackers to impersonate the LiveUpdate server.

Symantec LiveUpdate before 1.6 does not use cryptography to ensure the integrity of download files, which allows remote attackers to execute arbitrary code via DNS spoofing of the update.symantec.com site.

Symantec LiveUpdate 1.4 through 1.6, and possibly later versions, allows remote attackers to cause a denial of service (flood) via DNS spoofing of the update.symantec.com site.

Symantec LiveUpdate 1.5 stores proxy passwords in cleartext in a registry key, which could allow local users to obtain the passwords.