Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2019:14011-1
Rating: important
References: #1110924 #1111007 #1111011 #1111014 #1112188 #1114423 #1114988 #1115040 #1115045 #1115047 #1117756 #1123157 #1126140 #1126141 #1126192 #1126195 #1126196 #1129623
Cross-References: CVE-2018-10839 CVE-2018-17958 CVE-2018-17962 CVE-2018-17963 CVE-2018-18438 CVE-2018-18849 CVE-2018-19665 CVE-2018-19961 CVE-2018-19962 CVE-2018-19965 CVE-2018-19966 CVE-2018-19967 CVE-2019-6778 CVE-2019-9824
Affected Products:
  • SUSE Linux Enterprise Point of Sale 11-SP3
  • SUSE Linux Enterprise Debuginfo 11-SP3

An update that solves 14 vulnerabilities and has four fixes is now available.

Description:

This update for xen fixes the following issues:
Security issues fixed:

  • CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045)
  • CVE-2018-18849: Fixed an out of bounds memory access issue was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin (bsc#1114423).
  • CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in various Bluetooth functions, allowing this to crash qemu process resulting in Denial of Service (DoS). (bsc#1117756).
  • CVE-2018-18438: Fixed an integer overflow in ccid_card_vscard_read function which could allow memory corruption (bsc#1112188).
  • CVE-2018-17962: Fixed an integer overflow leading to a buffer overflow in the pcnet component (bsc#1111011)
  • CVE-2018-17963: Fixed an integer overflow in relation to large packet sizes, leading to a denial of service (DoS). (bsc#1111014)
  • Fixed an issue which could allow an untrusted PV domain with access to a physical device to DMA into its own pagetables leading to privilege escalation (bsc#1126195).
  • Fixed an issue which could allow a malicious or buggy x86 PV guest kernels can mount a Denial of Service attack affecting the whole system (bsc#1126196).
  • CVE-2018-17958: Fixed an integer overflow which could lead to buffer overflow (bsc#1111007).
  • CVE-2018-10839: Fixed an integer overflow leading to a buffer overflow in the ne2000 component (bsc#1110924).
  • CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp (bsc#1123157).
  • CVE-2018-19966: Fixed issue introduced by XSA-240 that could have caused conflicts with shadow paging (XSA-280)(bsc#1115047).
  • CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988).
  • Fixed multiple access violations introduced by XENMEM_exchange hypercall which could allow a single PV guest to leak arbitrary amounts of memory, leading to a denial of service (bsc#1126192).
  • Fixed an issue which could allow malicious or buggy guests with passed through PCI devices to be able to escalate their privileges, crash the host, or access data belonging to other guests. Additionally memory leaks were also possible (bsc#1126140).
  • Fixed a race condition issue which could allow malicious PV guests to escalate their privilege to that of the hypervisor (bsc#1126141).
  • CVE-2019-9824: Fixed an information leak in SLiRP networking implementation which could allow a user/process to read uninitialised stack memory contents (bsc#1129623).

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Point of Sale 11-SP3:
    zypper in -t patch sleposp3-xen-14011=1
  • SUSE Linux Enterprise Debuginfo 11-SP3:
    zypper in -t patch dbgsp3-xen-14011=1

Package List:

  • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
    • xen-kmp-default-4.2.5_21_3.0.101_0.47.106.59-45.30.1
    • xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.59-45.30.1
    • xen-libs-4.2.5_21-45.30.1
    • xen-tools-domU-4.2.5_21-45.30.1
  • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
    • xen-debuginfo-4.2.5_21-45.30.1
    • xen-debugsource-4.2.5_21-45.30.1

References: