Linux speared by trio of security holes

    Date22 Oct 2004
    4394
    Posted ByAnthony Pell
    A series of security holes in three common Linux components has led open-source vendors to rush out several updates in just one day. Two of them, rated "highly critical" by security company Secunia, are in libpng, a library used by a number of applications, including the Mozilla browser to display png graphics files. . . . A series of security holes in three common Linux components has led open-source vendors to rush out several updates in just one day. Two of them, rated "highly critical" by security company Secunia, are in libpng, a library used by a number of applications, including the Mozilla browser to display png graphics files.

    The problems are a boundary error in Mozilla's "png handle" function, and an integer overflow in the "png read" function. These flaws could potentially be exploited by malicious users to trick computer users into viewing a corrupted png image, and inadvertently linking an application into the vulnerable library. Ultimately, it means a hackers could execute arbitrary code on your PC.

    In August, a number of security flaws were discovered in libpng, including a bug in the POP3 capability and a risk of unauthorised upload of data from a victim's computer.

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