CVE-2017-7482: Integer Overflow
First published: Thu Apr 27 2017(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | |
| redhat/kernel | <4.12 | 4.12 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.11.4-1 6.11.5-1 |
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Reference Links
- http://seclists.org/oss-sec/2017/q2/602
- http://www.securityfocus.com/bid/99299
- http://www.securitytracker.com/id/1038787
- https://access.redhat.com/errata/RHSA-2019:0641
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f2f97656ada8d811d3c1bef503ced266fcd53a0
- https://www.debian.org/security/2017/dsa-3927
- https://www.debian.org/security/2017/dsa-3945
- https://launchpad.net/bugs/cve/CVE-2017-7482
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1464888
- https://bugzilla.redhat.com/show_bug.cgi?id=1446288
- https://git.kernel.org/linus/5f2f97656ada8d811d3c1bef503ced266fcd53a0
- https://security-tracker.debian.org/tracker/CVE-2017-7482
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7482
- https://nvd.nist.gov/vuln/detail/CVE-2017-7482
- https://ubuntu.com/security/CVE-2017-7482
Frequently Asked Questions
What is the severity of CVE-2017-7482?
The severity of CVE-2017-7482 is medium.
How does CVE-2017-7482 affect Linux kernel?
CVE-2017-7482 affects the Linux kernel before version 4.12.
What is the impact of CVE-2017-7482?
CVE-2017-7482 could lead to memory corruption and possible exploitation.
How can I fix CVE-2017-7482?
To fix CVE-2017-7482, you should update your Linux kernel to version 4.12 or later.
Where can I find more information about CVE-2017-7482?
You can find more information about CVE-2017-7482 in the references provided: [1], [2], [3].
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