Multiple vulnerabilities have been discovered in QEMU, a fast processor emulator. The Common Vulnerabilities and Exposures project identifies the following problems :
CVE-2012-2652 :
The snapshot mode of QEMU (-snapshot) incorrectly handles temporary files used to store the current state, making it vulnerable to symlink attacks (including arbitrary file overwriting and guest information disclosure) due to a race condition.
CVE-2012-3515 :
QEMU does not properly handle VT100 escape sequences when emulating certain devices with a virtual console backend. An attacker within a guest with access to the vulnerable virtual console could overwrite memory of QEMU and escalate privileges to that of the qemu process.
#%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-2545. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(62016);
script_version("1.13");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2012-2652", "CVE-2012-3515");
script_bugtraq_id(53725);
script_xref(name:"DSA", value:"2545");
script_name(english:"Debian DSA-2545-1 : qemu - multiple 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:
"Multiple vulnerabilities have been discovered in QEMU, a fast
processor emulator. The Common Vulnerabilities and Exposures project
identifies the following problems :
- CVE-2012-2652 :
The snapshot mode of QEMU (-snapshot) incorrectly
handles temporary files used to store the current state,
making it vulnerable to symlink attacks (including
arbitrary file overwriting and guest information
disclosure) due to a race condition.
- CVE-2012-3515 :
QEMU does not properly handle VT100 escape sequences
when emulating certain devices with a virtual console
backend. An attacker within a guest with access to the
vulnerable virtual console could overwrite memory of
QEMU and escalate privileges to that of the qemu
process."
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2012-2652"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2012-3515"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/squeeze/qemu"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2012/dsa-2545"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the qemu packages.
For the stable distribution (squeeze), these problems have been fixed
in version 0.12.5+dfsg-3squeeze2."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
script_set_attribute(attribute:"patch_publication_date", value:"2012/09/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/10");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2012-2021 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:"6.0", prefix:"libqemu-dev", reference:"0.12.5+dfsg-3squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"qemu", reference:"0.12.5+dfsg-3squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-keymaps", reference:"0.12.5+dfsg-3squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-system", reference:"0.12.5+dfsg-3squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-user", reference:"0.12.5+dfsg-3squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-user-static", reference:"0.12.5+dfsg-3squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-utils", reference:"0.12.5+dfsg-3squeeze2")) 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 | qemu | p-cpe:/a:debian:debian_linux:qemu |
debian | debian_linux | 6.0 | cpe:/o:debian:debian_linux:6.0 |