Vulnerability Details : CVE-2017-15649
net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2017-15649
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-15649
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST |
7.8
|
HIGH | CVSS:3.0/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-2017-15649
-
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-15649
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http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=008ba2a13f2d04c947adc536d19debb8fe66f110
kernel/git/torvalds/linux.git - Linux kernel source treeThird Party Advisory
-
http://patchwork.ozlabs.org/patch/813945/
[net] packet: hold bind lock when rebinding to fanout hook - PatchworkIssue Tracking;Third Party Advisory
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http://www.securityfocus.com/bid/101573
Linux Kernel CVE-2017-15649 Local Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
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https://usn.ubuntu.com/3754-1/
USN-3754-1: Linux kernel vulnerabilities | Ubuntu security notices
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http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6
Exploit;Third Party Advisory
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http://patchwork.ozlabs.org/patch/818726/
[net] packet: in packet_do_bind, test fanout with bind_lock held - PatchworkThird Party Advisory
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https://github.com/torvalds/linux/commit/008ba2a13f2d04c947adc536d19debb8fe66f110
packet: hold bind lock when rebinding to fanout hook · torvalds/linux@008ba2a · GitHubPatch;Third Party Advisory
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https://access.redhat.com/errata/RHSA-2018:0151
RHSA-2018:0151 - Security Advisory - Red Hat Customer Portal
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https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
[SECURITY] [DLA 1200-1] linux security update
-
https://github.com/torvalds/linux/commit/4971613c1639d8e5f102c4e797c3bf8f83a5a69e
packet: in packet_do_bind, test fanout with bind_lock held · torvalds/linux@4971613 · GitHubPatch;Third Party Advisory
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https://access.redhat.com/errata/RHSA-2018:0152
RHSA-2018:0152 - Security Advisory - Red Hat Customer Portal
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https://blogs.securiteam.com/index.php/archives/3484
SSD Advisory – Linux Kernel AF_PACKET Use-After-Free - SSD Secure DisclosureThird Party Advisory
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https://access.redhat.com/errata/RHSA-2018:0181
RHSA-2018:0181 - Security Advisory - Red Hat Customer Portal
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http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4971613c1639d8e5f102c4e797c3bf8f83a5a69e
kernel/git/torvalds/linux.git - Linux kernel source treeThird Party Advisory
Products affected by CVE-2017-15649
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*