A remote buffer overflow vulnerability affects Microsoft Office XP. The problem presents itself when an unsuspecting user follows a malicious HTML link that points to a Office document. A boundary condition error is exposed during this operation that may allow attacker-specified data to corrupt process memory. An attacker may leverage this issue to execute arbitrary code with the privileges of an unsuspecting user that follows a malicious embedded link.
Do not accept or execute files from untrusted or unknown sources.
Refusing to open Office documents originating from potentially malicious sources will greatly reduce exposure to this issue.
Do not follow links provided by unknown or untrusted sources.
As exploitation of this issue requires an unsuspecting user to follow a malicious link, it is advised that users exercise extreme caution when following links provided by individuals or groups of questionable legitimacy.
Run all software as a nonprivileged user with minimal access rights.
Non-administrative software should always be run as an unprivileged user with minimal access rights to reduce the impact of latent vulnerabilities.
Microsoft has released updates to address this issue.