CVE-2017-2634
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.22% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476, CWE-119
- Affected
- linux/linux kernel · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
References
- http://rhn.redhat.com/errata/RHSA-2017-0323.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0346.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0347.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96529Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037909Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51Patch, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0323.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0346.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0347.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96529Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037909Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.