CVE-2018-8897 (GCVE-0-2018-8897)
Vulnerability from cvelistv5
Published
2018-05-08 18:00
Modified
2024-08-05 07:10
Severity ?
CWE
  • n/a
Summary
A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.
References
https://github.com/torvalds/linux/commit/d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 x_refsource_MISC
http://openwall.com/lists/oss-security/2018/05/08/4 x_refsource_MISC
http://www.securitytracker.com/id/1040849 vdb-entry, x_refsource_SECTRACK
http://www.securityfocus.com/bid/104071 vdb-entry, x_refsource_BID
https://access.redhat.com/errata/RHSA-2018:1350 vendor-advisory, x_refsource_REDHAT
https://support.citrix.com/article/CTX234679 x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:1347 vendor-advisory, x_refsource_REDHAT
https://www.exploit-db.com/exploits/44697/ exploit, x_refsource_EXPLOIT-DB
https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html mailing-list, x_refsource_MLIST
http://www.securitytracker.com/id/1040866 vdb-entry, x_refsource_SECTRACK
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html mailing-list, x_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html mailing-list, x_refsource_MLIST
https://support.apple.com/HT208742 x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:1346 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:1348 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:1354 vendor-advisory, x_refsource_REDHAT
https://svnweb.freebsd.org/base?view=revision&revision=333368 x_refsource_MISC
https://www.debian.org/security/2018/dsa-4196 vendor-advisory, x_refsource_DEBIAN
https://www.freebsd.org/security/advisories/FreeBSD-SA-18:06.debugreg.asc x_refsource_MISC
http://www.securitytracker.com/id/1040744 vdb-entry, x_refsource_SECTRACK
https://www.triplefault.io/2018/05/spurious-db-exceptions-with-pop-ss.html x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:1351 vendor-advisory, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=1567074 x_refsource_MISC
https://xenbits.xen.org/xsa/advisory-260.html x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:1319 vendor-advisory, x_refsource_REDHAT
https://www.debian.org/security/2018/dsa-4201 vendor-advisory, x_refsource_DEBIAN
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:1355 vendor-advisory, x_refsource_REDHAT
https://security.netapp.com/advisory/ntap-20180927-0002/ x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:1345 vendor-advisory, x_refsource_REDHAT
https://www.exploit-db.com/exploits/45024/ exploit, x_refsource_EXPLOIT-DB
https://access.redhat.com/errata/RHSA-2018:1349 vendor-advisory, x_refsource_REDHAT
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8897 x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:1352 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:1318 vendor-advisory, x_refsource_REDHAT
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 x_refsource_MISC
https://patchwork.kernel.org/patch/10386677/ x_refsource_MISC
https://www.kb.cert.org/vuls/id/631579 third-party-advisory, x_refsource_CERT-VN
https://github.com/can1357/CVE-2018-8897/ x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:1524 vendor-advisory, x_refsource_REDHAT
http://openwall.com/lists/oss-security/2018/05/08/1 x_refsource_MISC
http://www.securitytracker.com/id/1040861 vdb-entry, x_refsource_SECTRACK
https://access.redhat.com/errata/RHSA-2018:1353 vendor-advisory, x_refsource_REDHAT
https://usn.ubuntu.com/3641-2/ vendor-advisory, x_refsource_UBUNTU
https://www.synology.com/support/security/Synology_SA_18_21 x_refsource_CONFIRM
http://www.securitytracker.com/id/1040882 vdb-entry, x_refsource_SECTRACK
https://usn.ubuntu.com/3641-1/ vendor-advisory, x_refsource_UBUNTU
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190921-01-debug-en x_refsource_CONFIRM
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website


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}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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