CVE-2017-7482
HIGHCVSS 7.8/10EPSS 0.47%
Last modified
CVE-2017-7482 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.2.90 |
| Linux | Linux Kernel | >= 3.3, < 3.10.108 |
| Linux | Linux Kernel | >= 3.11, < 3.16.45 |
| Linux | Linux Kernel | >= 3.17, < 3.18.59 |
| Linux | Linux Kernel | >= 3.19, < 4.1.43 |
| Linux | Linux Kernel | >= 4.2, < 4.4.75 |
| Linux | Linux Kernel | >= 4.5, < 4.9.35 |
| Linux | Linux Kernel | >= 4.10, < 4.11.8 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Redhat | Enterprise Mrg | 2.0 |
References
- http://seclists.org/oss-sec/2017/q2/602Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99299Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038787Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0641Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482Issue Tracking, Patch, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3927Third Party Advisory
- https://www.debian.org/security/2017/dsa-3945Third Party Advisory
- http://seclists.org/oss-sec/2017/q2/602Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99299Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038787Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0641Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482Issue Tracking, Patch, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3927Third Party Advisory
- https://www.debian.org/security/2017/dsa-3945Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2017-7482?
CVE-2017-7482 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.
How do I fix CVE-2017-7482?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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