glibc: getgrouplist buffer overflow vulnerability

glibc: getgrouplist buffer overflow vulnerability glibc contains a buffer overflow in the getgrouplist function. glibc 2003-11-22 2003-11-22 33383 local 2.2.5 2.2.4

glibc is the GNU C library.

A bug in the getgrouplist function can cause a buffer overflow if the size of the group list is too small to hold all the user's groups. This overflow can cause segmentation faults in user applications. This vulnerability exists only when an administrator has placed a user in a number of groups larger than that expected by an application.

Applications that use getgrouplist can crash.

There is no known workaround at this time.

It is recommended that all Gentoo Linux users update their systems as follows:


    # emerge sync
    # emerge -pv '>=sys-libs/glibc-2.2.5'
    # emerge '>=sys-libs/glibc-2.2.5'
    # emerge clean

CAN-2003-0689