#VU31253 Buffer overflow in Linux kernel - CVE-2017-2634
Published: July 27, 2018 / Updated: July 17, 2020
Vulnerability identifier: #VU31253
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-2634
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation before 2.6.22.17 used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.
Remediation
Install update from vendor's website.
External links
- http://rhn.redhat.com/errata/RHSA-2017-0323.html
- http://rhn.redhat.com/errata/RHSA-2017-0346.html
- http://rhn.redhat.com/errata/RHSA-2017-0347.html
- http://www.securityfocus.com/bid/96529
- http://www.securitytracker.com/id/1037909
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51