Vulnerability Details : CVE-2017-6347
The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel before 4.10.1 has incorrect expectations about skb data layout, which allows local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission.
Vulnerability category: Denial of service
Products affected by CVE-2017-6347
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-6347
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-6347
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-6347
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-6347
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1427984
1427984 – (CVE-2017-6347) CVE-2017-6347 kernel: ipv4: Incorrect IP_CHECKSUM handlingIssue Tracking;Patch;Third Party Advisory;VDB Entry
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http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1
Patch;Release Notes;Third Party Advisory
-
https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
ip: fix IP_CHECKSUM handling · torvalds/linux@ca4ef45 · GitHubPatch;Third Party Advisory
-
http://www.securityfocus.com/bid/96487
Linux Kernel CVE-2017-6347 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
http://www.openwall.com/lists/oss-security/2017/02/28/5
oss-security - Linux: ip: fix IP_CHECKSUM handling (CVE-2017-6347)Mailing List;Patch;Third Party Advisory
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