Several vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems :
CVE-2008-5714 Chris Webb discovered an off-by-one bug limiting KVMβs VNC passwords to 7 characters. This flaw might make it easier for remote attackers to guess the VNC password, which is limited to seven characters where eight was intended.
CVE-2009-3290 It was discovered that the kvm_emulate_hypercall function in KVM does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel memory.
The oldstable distribution (etch) does not contain kvm.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-1907. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(44772);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2008-5714", "CVE-2009-3290");
script_xref(name:"DSA", value:"1907");
script_name(english:"Debian DSA-1907-1 : kvm - several vulnerabilities");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Several vulnerabilities have been discovered in kvm, a full
virtualization system. The Common Vulnerabilities and Exposures
project identifies the following problems :
- CVE-2008-5714
Chris Webb discovered an off-by-one bug limiting KVM's
VNC passwords to 7 characters. This flaw might make it
easier for remote attackers to guess the VNC password,
which is limited to seven characters where eight was
intended.
- CVE-2009-3290
It was discovered that the kvm_emulate_hypercall
function in KVM does not prevent access to MMU
hypercalls from ring 0, which allows local guest OS
users to cause a denial of service (guest kernel crash)
and read or write guest kernel memory.
The oldstable distribution (etch) does not contain kvm."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=509997"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=548975"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2008-5714"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2009-3290"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2009/dsa-1907"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the kvm packages.
For the stable distribution (lenny), these problems have been fixed in
version 72+dfsg-5~lenny3."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
script_cwe_id(189);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:kvm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:5.0");
script_set_attribute(attribute:"patch_publication_date", value:"2009/10/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2010/02/24");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2010-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"5.0", prefix:"kvm", reference:"72+dfsg-5~lenny3")) flag++;
if (deb_check(release:"5.0", prefix:"kvm-source", reference:"72+dfsg-5~lenny3")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
else security_hole(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | kvm | p-cpe:/a:debian:debian_linux:kvm |
debian | debian_linux | 5.0 | cpe:/o:debian:debian_linux:5.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5714
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3290
bugs.debian.org/cgi-bin/bugreport.cgi?bug=509997
bugs.debian.org/cgi-bin/bugreport.cgi?bug=548975
security-tracker.debian.org/tracker/CVE-2008-5714
security-tracker.debian.org/tracker/CVE-2009-3290
www.debian.org/security/2009/dsa-1907