Debian DLA-1646-1 : qemu security update

2019-01-30T00:00:00
ID DEBIAN_DLA-1646.NASL
Type nessus
Reporter Tenable
Modified 2019-01-30T00:00:00

Description

Several vulnerabilities were found in QEMU, a fast processor emulator :

CVE-2018-17958

The rtl8139 emulator is affected by an integer overflow and subsequent buffer overflow. This vulnerability might be triggered by remote attackers with crafted packets to perform denial of service (via OOB stack buffer access).

CVE-2018-19364

The 9pfs subsystem is affected by a race condition allowing threads to modify an fid path while it is being accessed by another thread, leading to (for example) a use-after-free outcome. This vulnerability might be triggered by local attackers to perform denial of service.

CVE-2018-19489

The 9pfs subsystem is affected by a race condition during file renaming. This vulnerability might be triggered by local attackers to perform denial of service.

For Debian 8 'Jessie', these problems have been fixed in version 1:2.1+dfsg-12+deb8u9.

We recommend that you upgrade your qemu packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1646-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(121436);
  script_version("1.1");
  script_cvs_date("Date: 2019/01/30  9:29:41");

  script_cve_id("CVE-2018-17958", "CVE-2018-19364", "CVE-2018-19489");

  script_name(english:"Debian DLA-1646-1 : qemu security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities were found in QEMU, a fast processor 
emulator :

CVE-2018-17958

The rtl8139 emulator is affected by an integer overflow and subsequent
buffer overflow. This vulnerability might be triggered by remote
attackers with crafted packets to perform denial of service (via OOB
stack buffer access).

CVE-2018-19364

The 9pfs subsystem is affected by a race condition allowing threads to
modify an fid path while it is being accessed by another thread,
leading to (for example) a use-after-free outcome. This vulnerability
might be triggered by local attackers to perform denial of service.

CVE-2018-19489

The 9pfs subsystem is affected by a race condition during file
renaming. This vulnerability might be triggered by local attackers to
perform denial of service.

For Debian 8 'Jessie', these problems have been fixed in version
1:2.1+dfsg-12+deb8u9.

We recommend that you upgrade your qemu packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2019/01/msg00023.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/qemu"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");

  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:"p-cpe:/a:debian:debian_linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-mips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-misc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-ppc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-sparc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-x86");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user-binfmt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 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:"8.0", prefix:"qemu", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-guest-agent", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-kvm", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-arm", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-common", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-mips", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-misc", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-ppc", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-sparc", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-system-x86", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-user", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-user-binfmt", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-user-static", reference:"1:2.1+dfsg-12+deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"qemu-utils", reference:"1:2.1+dfsg-12+deb8u9")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");