CVE-2018-14633 (GCVE-0-2018-14633)

Vulnerability from cvelistv5 – Published: 2018-09-25 00:00 – Updated: 2024-08-05 09:38
VLAI?
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.
Severity ?
7 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE
Assigner
References
https://usn.ubuntu.com/3776-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3776-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3777-1/ vendor-advisoryx_refsource_UBUNTU
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… x_refsource_CONFIRM
https://usn.ubuntu.com/3775-1/ vendor-advisoryx_refsource_UBUNTU
https://seclists.org/oss-sec/2018/q3/270 x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3779-1/ vendor-advisoryx_refsource_UBUNTU
http://www.securityfocus.com/bid/105388 vdb-entryx_refsource_BID
https://git.kernel.org/pub/scm/linux/kernel/git/m… x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:3666 vendor-advisoryx_refsource_REDHAT
https://git.kernel.org/pub/scm/linux/kernel/git/m… x_refsource_CONFIRM
https://www.debian.org/security/2018/dsa-4308 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:3651 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3775-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3777-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3777-3/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:1946 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
The Linux Foundation kernel Affected: 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. 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Advisory\"]},{\"url\":\"https://usn.ubuntu.com/3777-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/3777-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/3777-3/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/3779-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2018/dsa-4308\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.