CVE-2021-44717: Infoleak
First published: Thu Dec 09 2021(Updated: )
Go before 1.16.12 and 1.17.x before 1.17.5 on UNIX allows write operations to an unintended file or unintended network connection as a consequence of erroneous closing of file descriptor 0 after file-descriptor exhaustion.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/openshift-serverless-clients | <0:1.0.0-2.el8 | 0:1.0.0-2.el8 |
| redhat/go-toolset | <1.16-0:1.16.12-1.el7_9 | 1.16-0:1.16.12-1.el7_9 |
| redhat/go-toolset | <1.16-golang-0:1.16.12-1.el7_9 | 1.16-golang-0:1.16.12-1.el7_9 |
| redhat/cri-o | <0:1.23.1-9.rhaos4.10.gitbdffb9a.el8 | 0:1.23.1-9.rhaos4.10.gitbdffb9a.el8 |
| redhat/openshift | <0:4.10.0-202202250816.p0.ge419edf.assembly.stream.el8 | 0:4.10.0-202202250816.p0.ge419edf.assembly.stream.el8 |
| redhat/openshift-clients | <0:4.10.0-202202160023.p0.gf93da17.assembly.stream.el8 | 0:4.10.0-202202160023.p0.gf93da17.assembly.stream.el8 |
| redhat/containernetworking-plugins | <0:0.9.1-2.rhaos4.10.el8 | 0:0.9.1-2.rhaos4.10.el8 |
| redhat/runc | <3:1.1.0-2.rhaos4.10.el8 | 3:1.1.0-2.rhaos4.10.el8 |
| redhat/butane | <0:0.13.1-2.rhaos4.9.el8 | 0:0.13.1-2.rhaos4.9.el8 |
| redhat/cri-tools | <0:1.22.0-2.el8 | 0:1.22.0-2.el8 |
| redhat/ignition | <0:2.12.0-3.rhaos4.9.el8 | 0:2.12.0-3.rhaos4.9.el8 |
| redhat/mcg | <0:5.10.0-72.el8 | 0:5.10.0-72.el8 |
| redhat/kubevirt | <0:4.12.0-1057.el7 | 0:4.12.0-1057.el7 |
| redhat/kubevirt | <0:4.12.0-1057.el8 | 0:4.12.0-1057.el8 |
| Golang Go | <1.16.12 | |
| Golang Go | >=1.17.0<1.17.5 | |
| Opengroup Unix | ||
| Debian Debian Linux | =9.0 | |
| redhat/Go | <1.17.5 | 1.17.5 |
| redhat/Go | <1.16.12 | 1.16.12 |
| All of | ||
| Any of | ||
| Golang Go | <1.16.12 | |
| Golang Go | >=1.17.0<1.17.5 | |
| Opengroup Unix |
Remedy
This bug can be mitigated by raising the per-process file descriptor limit.
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Reference Links
- https://cert-portal.siemens.com/productcert/pdf/ssa-744259.pdf
- https://groups.google.com/g/golang-announce/c/hcmEScgc00k
- https://lists.debian.org/debian-lts-announce/2022/01/msg00016.html
- https://lists.debian.org/debian-lts-announce/2022/01/msg00017.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00021.html
- https://security.gentoo.org/glsa/202208-02
- https://github.com/golang/go/issues/50057
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2030808
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2030810
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2030809
- https://go-review.googlesource.com/c/go/+/370577/
- https://go-review.googlesource.com/c/go/+/370576/
- https://access.redhat.com/errata/RHSA-2021:5160
- https://access.redhat.com/errata/RHSA-2021:5176
- https://access.redhat.com/errata/RHSA-2022:0055
- https://access.redhat.com/errata/RHSA-2022:0056
- https://access.redhat.com/errata/RHSA-2022:0947
- https://access.redhat.com/errata/RHSA-2022:0927
- https://access.redhat.com/errata/RHSA-2022:1051
- https://access.redhat.com/errata/RHSA-2022:1056
- https://access.redhat.com/errata/RHSA-2022:1361
- https://access.redhat.com/errata/RHSA-2022:1372
- https://access.redhat.com/errata/RHSA-2022:1734
- https://access.redhat.com/security/cve/cve-2021-44717
- https://access.redhat.com/errata/RHSA-2022:6526
- https://access.redhat.com/errata/RHSA-2023:0407
- https://access.redhat.com/errata/RHSA-2023:0408
- https://bugzilla.redhat.com/show_bug.cgi?id=2030806
- https://www.cve.org/CVERecord?id=CVE-2021-44717 https://nvd.nist.gov/vuln/detail/CVE-2021-44717 https://groups.google.com/g/golang-announce/c/hcmEScgc00k
- https://access.redhat.com/errata/RHSA-2022:0557
- https://access.redhat.com/errata/RHEA-2022:1596
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2021-44717?
CVE-2021-44717 is a vulnerability in Go before version 1.16.12 and 1.17.x before 1.17.5 on UNIX that allows write operations to an unintended file or program.
What is the severity of CVE-2021-44717?
The severity of CVE-2021-44717 is medium with a CVSS score of 4.8.
Which software versions are affected by CVE-2021-44717?
Golang Go versions up to 1.16.12 and 1.17.0 to 1.17.5 on UNIX are affected by CVE-2021-44717.
How can an attacker exploit CVE-2021-44717?
An attacker can exploit CVE-2021-44717 by causing file descriptor exhaustion for the process and then repeatedly calling syscall.ForkExec().
Are Opengroup Unix and Debian Debian Linux affected by CVE-2021-44717?
No, Opengroup Unix and Debian Debian Linux are not vulnerable to CVE-2021-44717.
What is the remedy for CVE-2021-44717?
The recommended remedy for CVE-2021-44717 is to update to Go version 1.17.5 if you are using 1.17.x, or to update to Go version 1.16.12 if you are using 1.16.x.
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