Vulnerability Details : CVE-2016-8632
The tipc_msg_build function in net/tipc/msg.c in the Linux kernel through 4.8.11 does not validate the relationship between the minimum fragment length and the maximum packet size, which allows local users to gain privileges or cause a denial of service (heap-based buffer overflow) by leveraging the CAP_NET_ADMIN capability.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2016-8632
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- 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-2016-8632
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-8632
| 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-2016-8632
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The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-8632
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https://bugzilla.redhat.com/show_bug.cgi?id=1390832
1390832 – (CVE-2016-8632) CVE-2016-8632 kernel: TIPC subsystem: tipc_msg_build() doesn't validate MTU, may cause memory corruption.Issue Tracking
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https://www.mail-archive.com/netdev%40vger.kernel.org/msg133205.html
[PATCH net] tipc: Guard against tiny MTU in tipc_msg_build()
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http://www.openwall.com/lists/oss-security/2016/11/08/5
oss-security - CVE-2016-8632 -- Linux kernel: tipc_msg_build() doesn't validate MTU that can trigger heap overflowMailing List;Third Party Advisory
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http://www.securityfocus.com/bid/94211
Linux Kernel CVE-2016-8632 Local Heap Overflow VulnerabilityThird Party Advisory;VDB Entry
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