SB2018072713 - Buffer overflow in Linux kernel
Published: July 27, 2018 Updated: July 17, 2020
Security Bulletin ID
SB2018072713
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2017-2634)
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.
References
- 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