9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.217 Low
EPSS
Percentile
96.5%
freedesktop.org reports:
A BDF font file containing a longer than expected string can cause
a buffer overflow on the stack. Testing in X servers built with
Stack Protector restulted in an immediate crash when reading a
user-proveded specially crafted font.
As libXfont is used to read user-specified font files in all X
servers distributed by X.Org, including the Xorg server which is
often run with root privileges or as setuid-root in order to access
hardware, this bug may lead to an unprivileged user acquiring root
privileges in some systems.