CVE-2021-41772: Input Validation

Published Aug 30, 2021
·
Updated

A vulnerability was found in archive/zip of the Go standard library. Applications written in Go where Reader.Open (the API implementing io/fs.FS introduced in Go 1.16) can panic when parsing a crafted ZIP archive containing completely invalid names or an empty filename argument.

Other sources

Go before 1.16.10 and 1.17.x before 1.17.3 allows an archive/zip Reader.Open panic via a crafted ZIP archive containing an invalid name or an empty filename field.

Golang Go is vulnerable to a denial of service, caused by an out-of-bounds slice situation in the Reader.Open function. By using a specially-crafted ZIP archive containing an invalid name or an empty filename field, a remote attacker could exploit this vulnerability to cause a panic, and results in a denial of service condition.

— IBM

Reader.Open (the API implementing io/fs.FS introduced in Go 1.16) can be made to panic by an attacker providing either a crafted ZIP archive containing completely invalid names or an empty filename argument.

Reference: https://github.com/golang/go/issues/48085

— Red Hat

Affected Software

29 affected componentsFixes available
redhat/openshift-serverless-clients<0:1.1.0-2.el8
0:1.1.0-2.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/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.el7
0:4.10.0-202202160023.p0.gf93da17.assembly.stream.el7
IBM Cloud Pak for Security<=1.10.0.0 - 1.10.11.0
IBM QRadar Suite Software<=1.10.12.0 - 1.10.16.0
Golang Go<1.16.10
Golang Go>=1.17.0<1.17.3
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Oracle TimesTen In-Memory Database
Microsoft azl3 python-tensorboard 2.16.2-2
Patch available
Microsoft cm1 golang 1.16.10-1
Patch available
Microsoft azl3 python-tensorboard 2.11.0-3
Patch available
Microsoft cbl2 golang 1.17.8-1
Patch available
redhat/go<1.16.10
1.16.10
redhat/go<1.17.3
1.17.3
alpine/go>=1.17.0<1.16.10-r0
1.16.10-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0
alpine/go>=1.17.0<1.17.3-r0
1.17.3-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/openshift-serverless-clients to a version that resolves this vulnerability.

    Fixed in 0:1.1.0-2.el8
  2. Upgrade

    Upgrade redhat/go-toolset to a version that resolves this vulnerability.

    Fixed in 1.16-0:1.16.12-1.el7_9
  3. Upgrade

    Upgrade redhat/go-toolset to a version that resolves this vulnerability.

    Fixed in 1.16-golang-0:1.16.12-1.el7_9
  4. Upgrade

    Upgrade redhat/openshift to a version that resolves this vulnerability.

    Fixed in 0:4.10.0-202202250816.p0.ge419edf.assembly.stream.el8
  5. Upgrade

    Upgrade redhat/openshift-clients to a version that resolves this vulnerability.

    Fixed in 0:4.10.0-202202160023.p0.gf93da17.assembly.stream.el7
  6. Upgrade

    Upgrade redhat/go to a version that resolves this vulnerability.

    Fixed in 1.16.10
  7. Upgrade

    Upgrade redhat/go to a version that resolves this vulnerability.

    Fixed in 1.17.3
  8. Upgrade

    Upgrade alpine/go to a version that resolves this vulnerability.

    Fixed in 1.16.10-r0
  9. Upgrade

    Upgrade alpine/go to a version that resolves this vulnerability.

    Fixed in 1.17.3-r0

Event History

Aug 30, 2021
CVE Published
12:00 AM
Nov 5, 2021
Data Sourced
via Red Hat·05:55 PM
DescriptionSeverityAffected Software
Nov 8, 2021
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·06:15 AM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·06:15 AM
DescriptionSeverityAffected Software
Nov 11, 2021
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the vulnerability ID of this vulnerability?

The vulnerability ID is CVE-2021-41772.

2

What is the severity of CVE-2021-41772?

The severity of CVE-2021-41772 is high (7.5).

3

Which versions of Go are affected by CVE-2021-41772?

Go versions before 1.16.10 and 1.17.x before 1.17.3 are affected by CVE-2021-41772.

4

How can applications written in Go be affected by CVE-2021-41772?

Applications written in Go, where Reader.Open (the API implementing io/fs.FS introduced in Go 1.16), can panic when parsing a crafted ZIP archive containing completely invalid names or an empty filename argument.

5

Are there any references available for CVE-2021-41772?

Yes, you can refer to the following links for more information on CVE-2021-41772: [link1](https://github.com/golang/go/issues/48085), [link2](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2020737), [link3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2020739).

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