Stack-based Buffer Overflow Affecting kernel-rt-kvm package, versions <0:3.10.0-957.1.3.rt56.913.el7
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-CENTOS7-KERNELRTKVM-2132520
- published 26 Jul 2021
- disclosed 24 Sep 2018
Introduced: 24 Sep 2018
CVE-2018-14633 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-957.1.3.rt56.913.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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
- http://www.securityfocus.com/bid/105388
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14633
- https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=1816494330a83f2a064499d8ed2797045641f92c
- https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=8c39e2699f8acb2e29782a834e56306da24937fe
- https://access.redhat.com/security/cve/CVE-2018-14633
- https://www.debian.org/security/2018/dsa-4308
- https://seclists.org/oss-sec/2018/q3/270
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
- https://access.redhat.com/errata/RHSA-2018:3666
- https://usn.ubuntu.com/3775-1/
- https://usn.ubuntu.com/3775-2/
- https://usn.ubuntu.com/3776-1/
- https://usn.ubuntu.com/3776-2/
- https://usn.ubuntu.com/3777-1/
- https://usn.ubuntu.com/3777-2/
- https://usn.ubuntu.com/3777-3/
- https://usn.ubuntu.com/3779-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=1626035