CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
Percentile
90.3%
Updated libpng packages that fix a security issue are now available for Red Hat Enterprise Linux 4.
This update has been rated as having moderate security impact by the Red Hat Security Response Team.
The libpng package contains a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files.
A heap based buffer overflow bug was found in the way libpng strips alpha channels from a PNG image. An attacker could create a carefully crafted PNG image file in such a way that it could cause an application linked with libpng to crash or execute arbitrary code when the file is opened by a victim. The Common Vulnerabilities and Exposures project has assigned the name CVE-2006-0481 to this issue.
Please note that the vunerable libpng function is only used by TeTeX and XEmacs on Red Hat Enterprise Linux 4.
All users of libpng are advised to update to these updated packages which contain a backported patch that is not vulnerable to this issue.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2006:0205. The text
# itself is copyright (C) Red Hat, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(20899);
script_version("1.23");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2006-0481");
script_xref(name:"RHSA", value:"2006:0205");
script_name(english:"RHEL 4 : libpng (RHSA-2006:0205)");
script_summary(english:"Checks the rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Red Hat host is missing one or more security updates."
);
script_set_attribute(
attribute:"description",
value:
"Updated libpng packages that fix a security issue are now available
for Red Hat Enterprise Linux 4.
This update has been rated as having moderate security impact by the
Red Hat Security Response Team.
The libpng package contains a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files.
A heap based buffer overflow bug was found in the way libpng strips
alpha channels from a PNG image. An attacker could create a carefully
crafted PNG image file in such a way that it could cause an
application linked with libpng to crash or execute arbitrary code when
the file is opened by a victim. The Common Vulnerabilities and
Exposures project has assigned the name CVE-2006-0481 to this issue.
Please note that the vunerable libpng function is only used by TeTeX
and XEmacs on Red Hat Enterprise Linux 4.
All users of libpng are advised to update to these updated packages
which contain a backported patch that is not vulnerable to this issue."
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2006-0481"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2006:0205"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected libpng and / or libpng-devel packages."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libpng");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libpng-devel");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");
script_set_attribute(attribute:"vuln_publication_date", value:"2006/01/31");
script_set_attribute(attribute:"patch_publication_date", value:"2006/02/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2006/02/14");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2006-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Red Hat Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^4([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 4.x", "Red Hat " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo))
{
rhsa = "RHSA-2006:0205";
yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
if (!empty_or_null(yum_report))
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : yum_report
);
exit(0);
}
else
{
audit_message = "affected by Red Hat security advisory " + rhsa;
audit(AUDIT_OS_NOT, audit_message);
}
}
else
{
flag = 0;
if (rpm_check(release:"RHEL4", reference:"libpng-1.2.7-1.el4.2")) flag++;
if (rpm_check(release:"RHEL4", reference:"libpng-devel-1.2.7-1.el4.2")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get() + redhat_report_package_caveat()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libpng / libpng-devel");
}
}