SUSE: Security Advisory (SUSE-SU-2018:1077-1)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.4.2018.1077.1");
  script_cve_id("CVE-2017-18030", "CVE-2017-5715", "CVE-2018-5683", "CVE-2018-7550");
  script_tag(name:"creation_date", value:"2021-06-09 14:57:45 +0000 (Wed, 09 Jun 2021)");
  script_version("2024-02-02T14:37:50+0000");
  script_tag(name:"last_modification", value:"2024-02-02 14:37:50 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-03-22 16:50:31 +0000 (Thu, 22 Mar 2018)");

  script_name("SUSE: Security Advisory (SUSE-SU-2018:1077-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse_sles", "ssh/login/rpms", re:"ssh/login/release=(SLES11\.0SP4)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2018:1077-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2018/suse-su-20181077-1/");
  script_xref(name:"URL", value:"https://www.qemu.org/2018/02/14/qemu-2-11-1-and-spectre-update/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'kvm' package(s) announced via the SUSE-SU-2018:1077-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"This update for kvm fixes the following issues:
- This update has the next round of Spectre v2 related patches, which now
 integrates with corresponding changes in libvirt. A January 2018 release
 of qemu initially addressed the Spectre v2 vulnerability for KVM guests
 by exposing the spec-ctrl feature for all x86 vcpu types, which was the
 quick and dirty approach, but not the proper solution. We remove that
 initial patch and now rely on patches from upstream. This update defines
 spec_ctrl and ibpb cpu feature flags as well as new cpu models which are
 clones
 of existing models with either -IBRS or -IBPB added to the end of the
 model name. These new vcpu models explicitly include the new
 feature(s), whereas the feature flags can be added to the cpu parameter
 as with other features. In short, for continued Spectre v2 protection,
 ensure that either the appropriate cpu feature flag is added to the
 QEMU command-line, or one of the new cpu models is used. Although
 migration from older versions is supported, the new cpu features won't
 be properly exposed to the guest until it is restarted with the cpu
 features explicitly added. A reboot is insufficient.
- A warning patch is added which attempts to detect a migration from a
 qemu version which had the quick and dirty fix (it only detects certain
 cases, but hopefully is helpful.) For additional information on Spectre
 v2 as it relates to QEMU, see:
 [link moved to references]
 (CVE-2017-5715 bsc#1068032)
- A patch is added to continue to detect Spectre v2 mitigation features
 (as shown by cpuid), and if found provide that feature to guests, even
 if running on older KVM (kernel) versions which do not yet expose that
 feature to QEMU. (bsc#1082276) These two patches will be removed when we
 can reasonably assume everyone is running with the appropriate updates.
- Security fixes for the following CVE issues: (bsc#1076114 CVE-2018-5683)
 (bsc#1083291 CVE-2018-7550)
- This patch is already included, add here for CVE track (bsc#1076179
 CVE-2017-18030)
- Toolchain changes have cause the built size of pxe-virtio.rom to exceed
 64K. Tweak rarely used strings in code to reduce size of the binary so
 it fits again.
- Eliminate bogus use of CPUID_7_0_EDX_PRED_CMD which we've carried since
 the initial Spectre v2 patch was added. EDX bit 27 of CPUID Leaf 07H,
 Sub-leaf 0 provides status on STIBP, and not the PRED_CMD MSR. Exposing
 the STIBP CPUID feature bit to the guest is wrong in general, since the
 VM doesn't directly control the scheduling of physical hyperthreads.
 This is left strictly to the L0 hypervisor.");

  script_tag(name:"affected", value:"'kvm' package(s) on SUSE Linux Enterprise Server 11-SP4.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "SLES11.0SP4") {

  if(!isnull(res = isrpmvuln(pkg:"kvm", rpm:"kvm~1.4.2~60.9.1", rls:"SLES11.0SP4"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);