Vulnerability Details : CVE-2017-7482
In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.
Vulnerability category: OverflowMemory CorruptionGain privilege
Products affected by CVE-2017-7482
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Threat overview for CVE-2017-7482
Top countries where our scanners detected CVE-2017-7482
Top open port discovered on systems with this issue
49152
IPs affected by CVE-2017-7482 38,100
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2017-7482!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2017-7482
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7482
| 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 | |
|
7.1
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
1.8
|
5.2
|
Red Hat, Inc. | |
|
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-2017-7482
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2017-7482
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f2f97656ada8d811d3c1bef503ced266fcd53a0
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482
1446288 – (CVE-2017-7482) CVE-2017-7482 kernel: net/rxrpc: overflow in decoding of krb5 principalIssue Tracking;Patch;Third Party Advisory
-
https://www.debian.org/security/2017/dsa-3945
Debian -- Security Information -- DSA-3945-1 linuxThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:0641
RHSA-2019:0641 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://seclists.org/oss-sec/2017/q2/602
oss-sec: CVE-2017-7482 Linux kernel: krb5 ticket decode len check.Mailing List;Patch;Third Party Advisory
-
https://www.debian.org/security/2017/dsa-3927
Debian -- Security Information -- DSA-3927-1 linuxThird Party Advisory
-
http://www.securityfocus.com/bid/99299
Linux Kernel CVE-2017-7482 Local Buffer Overflow VulnerabilityVDB Entry;Third Party Advisory
-
http://www.securitytracker.com/id/1038787
Linux Kernel Kerberos RxRPC Ticket Decoding Bug Lets Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
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