Updated Kerberos (krb5) packages that correct double-free and ASN.1 parsing bugs are now available for Red Hat Enterprise Linux.
Kerberos is a networked authentication system that uses a trusted third party (a KDC) to authenticate clients and servers to each other.
Several double-free bugs were found in the Kerberos 5 KDC and libraries. A remote attacker could potentially exploit these flaws to execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-0642 and CVE-2004-0643 to these issues.
A double-free bug was also found in the krb524 server (CVE-2004-0772), however this issue was fixed for Red Hat Enterprise Linux 2.1 users by a previous erratum, RHSA-2003:052.
An infinite loop bug was found in the Kerberos 5 ASN.1 decoder library. A remote attacker may be able to trigger this flaw and cause a denial of service. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0644 to this issue.
All users of krb5 should upgrade to these updated packages, which contain backported security patches to resolve these issues.
#%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-2004:448. The text
# itself is copyright (C) Red Hat, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(14596);
script_version("1.30");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2004-0642", "CVE-2004-0643", "CVE-2004-0644");
script_xref(name:"RHSA", value:"2004:448");
script_name(english:"RHEL 2.1 : krb5 (RHSA-2004:448)");
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 Kerberos (krb5) packages that correct double-free and ASN.1
parsing bugs are now available for Red Hat Enterprise Linux.
Kerberos is a networked authentication system that uses a trusted
third party (a KDC) to authenticate clients and servers to each other.
Several double-free bugs were found in the Kerberos 5 KDC and
libraries. A remote attacker could potentially exploit these flaws to
execute arbitrary code. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the names CVE-2004-0642 and
CVE-2004-0643 to these issues.
A double-free bug was also found in the krb524 server (CVE-2004-0772),
however this issue was fixed for Red Hat Enterprise Linux 2.1 users by
a previous erratum, RHSA-2003:052.
An infinite loop bug was found in the Kerberos 5 ASN.1 decoder
library. A remote attacker may be able to trigger this flaw and cause
a denial of service. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2004-0644 to this issue.
All users of krb5 should upgrade to these updated packages, which
contain backported security patches to resolve these issues."
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2004-0642"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2004-0643"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2004-0644"
);
script_set_attribute(
attribute:"see_also",
value:"http://web.mit.edu/kerberos/advisories/"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2004:448"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_cwe_id(119);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-workstation");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:2.1");
script_set_attribute(attribute:"vuln_publication_date", value:"2004/09/28");
script_set_attribute(attribute:"patch_publication_date", value:"2004/08/31");
script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/01");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2004-2021 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:"^2\.1([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 2.1", "Red Hat " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
if (cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i386", cpu);
yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo))
{
rhsa = "RHSA-2004:448";
yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
if (!empty_or_null(yum_report))
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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:"RHEL2.1", cpu:"i386", reference:"krb5-devel-1.2.2-31")) flag++;
if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"krb5-libs-1.2.2-31")) flag++;
if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"krb5-server-1.2.2-31")) flag++;
if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"krb5-workstation-1.2.2-31")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, "krb5-devel / krb5-libs / krb5-server / krb5-workstation");
}
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | krb5-devel | p-cpe:/a:redhat:enterprise_linux:krb5-devel |
redhat | enterprise_linux | krb5-libs | p-cpe:/a:redhat:enterprise_linux:krb5-libs |
redhat | enterprise_linux | krb5-server | p-cpe:/a:redhat:enterprise_linux:krb5-server |
redhat | enterprise_linux | krb5-workstation | p-cpe:/a:redhat:enterprise_linux:krb5-workstation |
redhat | enterprise_linux | 2.1 | cpe:/o:redhat:enterprise_linux:2.1 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0642
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0643
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0644
web.mit.edu/kerberos/advisories/
access.redhat.com/errata/RHSA-2004:448
access.redhat.com/security/cve/cve-2004-0642
access.redhat.com/security/cve/cve-2004-0643
access.redhat.com/security/cve/cve-2004-0644