CVE-2017-13305
First published: Mon Apr 02 2018(Updated: )
A flaw was found in the Linux kernels implementation of valid_master_desc() in which a memory buffer would be compared to a userspace value with an incorrect size of comparison. By bruteforcing the comparison an attacker could determine what was in memory after the description. This could allow a local attacker to obtain possibly sensitive information from kernel memory. Upstream patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=794b4bc292f5d31739d89c0202c54e7dc9bc3add">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=794b4bc292f5d31739d89c0202c54e7dc9bc3add</a>
Credit: security@android.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.12 | 4.12 |
| Android | ||
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Debian | =8.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.17-1 |
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Reference Links
- https://source.android.com/security/bulletin/pixel/2018-04-01
- https://usn.ubuntu.com/3631-1/
- https://usn.ubuntu.com/3631-2/
- https://usn.ubuntu.com/3655-2/
- https://usn.ubuntu.com/3655-1/
- https://access.redhat.com/errata/RHSA-2018:2165
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://launchpad.net/bugs/cve/CVE-2017-13305
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=794b4bc292f5d31739d89c0202c54e7dc9bc3add
- https://bugzilla.redhat.com/show_bug.cgi?id=1581637
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13305
- https://nvd.nist.gov/vuln/detail/CVE-2017-13305
- https://security-tracker.debian.org/tracker/CVE-2017-13305
- https://ubuntu.com/security/CVE-2017-13305
- https://git.kernel.org/linus/794b4bc292f5d31739d89c0202c54e7dc9bc3add
Frequently Asked Questions
What is CVE-2017-13305?
CVE-2017-13305 is an information disclosure vulnerability in the Upstream kernel encrypted-keys on Android.
Which products are affected by CVE-2017-13305?
CVE-2017-13305 affects the Android kernel.
What is the severity of CVE-2017-13305?
CVE-2017-13305 has a severity level of medium.
How do I fix CVE-2017-13305 on Ubuntu?
To fix CVE-2017-13305 on Ubuntu, update the 'linux-aws' package to version 4.4.0-1017.17 or 4.4.0-1055.64, the 'linux-hwe' package to version 4.13.0-26.29~16.04.2, the 'linux-hwe-edge' package to version 4.18.0-8.9~18.04.1, or the 'linux-lts-xenial' package to version 4.4.0-121.145~14.04.1.
How do I fix CVE-2017-13305 on Red Hat?
To fix CVE-2017-13305 on Red Hat, update the 'kernel' package to version 4.12 or higher.
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