CVE-2017-8824: Use After Free
First published: Fri Dec 01 2017(Updated: )
Last updated 29 November 2024
Credit: security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.14<3.2.97 | |
| Linux Kernel | >=3.3<3.16.52 | |
| Linux Kernel | >=3.17<3.18.95 | |
| Linux Kernel | >=3.19<4.1.50 | |
| Linux Kernel | >=4.2<4.4.116 | |
| Linux Kernel | >=4.5<4.9.82 | |
| Linux Kernel | >=4.10<4.14.20 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 |
Remedy
Blacklist the dccp ipv[46] autoloading aliases by adding the following lines to /etc/modprobe.d/blacklist-dccp.conf: alias net-pf-2-proto-0-type-6 off alias net-pf-2-proto-33-type-6 off alias net-pf-10-proto-0-type-6 off alias net-pf-10-proto-33-type-6 off
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- http://lists.openwall.net/netdev/2017/12/04/224
- http://www.openwall.com/lists/oss-security/2017/12/05/1
- http://www.securityfocus.com/bid/102056
- https://access.redhat.com/errata/RHSA-2018:0399
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/errata/RHSA-2018:1130
- https://access.redhat.com/errata/RHSA-2018:1170
- https://access.redhat.com/errata/RHSA-2018:1216
- https://access.redhat.com/errata/RHSA-2018:1319
- https://access.redhat.com/errata/RHSA-2018:3822
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://usn.ubuntu.com/3581-1/
- https://usn.ubuntu.com/3581-2/
- https://usn.ubuntu.com/3581-3/
- https://usn.ubuntu.com/3582-1/
- https://usn.ubuntu.com/3582-2/
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- https://www.debian.org/security/2017/dsa-4073
- https://www.debian.org/security/2018/dsa-4082
- https://www.exploit-db.com/exploits/43234/
- https://launchpad.net/bugs/cve/CVE-2017-8824
- http://www.spinics.net/lists/netdev/msg469985.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=69c64866ce072dea1d1e59a0d61e0f66c0dffb76
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1520764
- https://bugzilla.redhat.com/show_bug.cgi?id=1519591
- https://git.kernel.org/linus/69c64866ce072dea1d1e59a0d61e0f66c0dffb76
- https://security-tracker.debian.org/tracker/CVE-2017-8824
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8824
- https://nvd.nist.gov/vuln/detail/CVE-2017-8824
- https://ubuntu.com/security/CVE-2017-8824
Frequently Asked Questions
What is the severity of CVE-2017-8824?
CVE-2017-8824 is classified as a high severity vulnerability due to the potential for privilege escalation or denial of service.
How do I fix CVE-2017-8824?
To fix CVE-2017-8824, users should upgrade to a patched version of the Linux kernel, specifically versions above 4.14.20.
Who is affected by CVE-2017-8824?
CVE-2017-8824 affects local users of the Linux kernel versions up to 4.14.3.
What type of vulnerability is CVE-2017-8824?
CVE-2017-8824 is a use-after-free vulnerability that can be exploited during the DCCP_LISTEN state.
How does CVE-2017-8824 allow exploitation?
CVE-2017-8824 can be exploited via an AF_UNSPEC connect system call, potentially leading to privilege escalation.
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