CVE-2018-14633 (GCVE-0-2018-14633)
Vulnerability from cvelistv5
Published
2018-09-25 00:00
Modified
2024-08-05 09:38
Severity ?
7.0 (High) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE
Summary
A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in the Linux kernel in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. Kernel versions 4.18.x, 4.14.x and 3.10.x are believed to be vulnerable.
References
secalert@redhat.com http://www.securityfocus.com/bid/105388 Third Party Advisory, VDB Entry
secalert@redhat.com https://access.redhat.com/errata/RHSA-2018:3651 Third Party Advisory
secalert@redhat.com https://access.redhat.com/errata/RHSA-2018:3666 Third Party Advisory
secalert@redhat.com https://access.redhat.com/errata/RHSA-2019:1946 Third Party Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14633 Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=1816494330a83f2a064499d8ed2797045641f92c Patch, Vendor Advisory
secalert@redhat.com https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=8c39e2699f8acb2e29782a834e56306da24937fe Patch, Vendor Advisory
secalert@redhat.com https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html Mailing List, Third Party Advisory
secalert@redhat.com https://seclists.org/oss-sec/2018/q3/270 Mailing List, Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3775-1/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3775-2/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3776-1/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3776-2/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3777-1/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3777-2/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3777-3/ Third Party Advisory
secalert@redhat.com https://usn.ubuntu.com/3779-1/ Third Party Advisory
secalert@redhat.com https://www.debian.org/security/2018/dsa-4308 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.securityfocus.com/bid/105388 Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2018:3651 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2018:3666 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2019:1946 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14633 Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=1816494330a83f2a064499d8ed2797045641f92c Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=8c39e2699f8acb2e29782a834e56306da24937fe Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://seclists.org/oss-sec/2018/q3/270 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3775-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3775-2/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3776-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3776-2/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3777-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3777-2/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3777-3/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3779-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.debian.org/security/2018/dsa-4308 Third Party Advisory
Impacted products
Vendor Product Version
The Linux Foundation kernel Version: 4.18.x, 4.14.x, 3.10.x
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Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. Kernel versions 4.18.x, 4.14.x and 3.10.x are believed to be vulnerable.\"},{\"lang\":\"es\",\"value\":\"Se ha detectado un error de seguridad en la funci\u00f3n chap_server_compute_md5() en el c\u00f3digo ISCSI objetivo en el kernel de Linux, por la forma en la que se procesa una petici\u00f3n de autenticaci\u00f3n de un iniciador ISCSI. Un atacante remoto no autenticado puede provocar un desbordamiento de b\u00fafer basado en pila y quebrar hasta 17 bytes de la pila. El ataque requiere que el iSCSI objetivo est\u00e9 habilitado en el host de la v\u00edctima. Dependiendo de c\u00f3mo se haya construido el c\u00f3digo del objetivo (dependiendo de un compilador, marcas de compilaci\u00f3n o arquitectura del hardware), un ataque podr\u00eda conducir a un cierre inesperado del sistema y, por lo tanto, a una denegaci\u00f3n de servicio (DoS) o, posiblemente, a un acceso no autorizado a los datos exportados por un objetivo iSCSI. Debido a la naturaleza del error, no se puede descartar totalmente un escalado de privilegios, aunque se cree que es altamente improbable. Se cree que las versiones 4.18.x, 4.14.x y 3.10.x del kernel se han visto afectadas.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":4.7}],\"cvssMetricV30\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":4.7}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:C\",\"baseScore\":8.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":8.6,\"impactScore\":8.5,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-121\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.1\",\"versionEndExcluding\":\"3.16.59\",\"matchCriteriaId\":\"91EB2492-AF45-4E3D-AE36-38FA574C443E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.17\",\"versionEndExcluding\":\"3.18.124\",\"matchCriteriaId\":\"B3BAD3D3-6A89-4EC1-BD95-286444E6B713\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.19\",\"versionEndExcluding\":\"4.4.159\",\"matchCriteriaId\":\"81BE9158-31B0-422D-BFDC-5B82C28F55E4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.5\",\"versionEndExcluding\":\"4.9.130\",\"matchCriteriaId\":\"E56125EB-77CC-4331-8A48-7E61B58849C1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.73\",\"matchCriteriaId\":\"D4FF143E-E50C-46FE-9CFD-BC406850E54B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.18.11\",\"matchCriteriaId\":\"D37589D2-0934-4140-9EB0-54923E04F1B3\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"8D305F7A-D159-4716-AB26-5E38BB5CD991\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"B5A6F2F3-4894-4392-8296-3B8DD2679084\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F96E3779-F56A-45FF-BB3D-4980527D721E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5BF3C7A5-9117-42C7-BEA1-4AA378A582EF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"51EF4996-72F4-4FA4-814F-F5991E7A8318\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D99A687E-EAE6-417E-A88E-D0082BC194CD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise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  }
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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