Vulnerability Details : CVE-2017-15102
The tower_probe function in drivers/usb/misc/legousbtower.c in the Linux kernel before 4.8.1 allows local users (who are physically proximate for inserting a crafted USB device) to gain privileges by leveraging a write-what-where condition that occurs after a race condition and a NULL pointer dereference.
Vulnerability category: Memory Corruption
Products affected by CVE-2017-15102
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-15102
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-2017-15102
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
6.3
|
MEDIUM | CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
0.4
|
5.9
|
NIST |
CWE ids for CVE-2017-15102
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-15102
-
https://bugzilla.redhat.com/show_bug.cgi?id=1505905
1505905 – (CVE-2017-15102) CVE-2017-15102 kernel: NULL pointer dereference due to race condition in probe function of legousbtower driverIssue Tracking;Patch;Third Party Advisory
-
https://usn.ubuntu.com/3583-1/
USN-3583-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://github.com/torvalds/linux/commit/2fae9e5a7babada041e2e161699ade2447a01989
usb: misc: legousbtower: Fix NULL pointer deference · torvalds/linux@2fae9e5 · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2fae9e5a7babada041e2e161699ade2447a01989
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Patch;Vendor Advisory
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http://www.securityfocus.com/bid/101790
Linux Kernel CVE-2017-15102 Local Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/3583-2/
USN-3583-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://seclists.org/oss-sec/2017/q4/238
oss-sec: CVE-2017-15102: Linux kernel: usb: NULL-deref due to a race condition in [legousbtower] driverIssue Tracking;Mailing List;Third Party Advisory
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