CVE-2021-36221: Race Condition
First published: Sun Aug 08 2021(Updated: )
Golang Go is vulnerable to a denial of service, caused by a race condition upon an ErrAbortHandler abort. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a net/http/httputil ReverseProxy panic.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/go | <1.16.7 | 1.16.7 |
| redhat/go | <1.15.15 | 1.15.15 |
| Golang Go | <1.15.15 | |
| Golang Go | >=1.16.0<1.16.7 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Debian Debian Linux | =9.0 | |
| Oracle TimesTen In-Memory Database | <21.1.1.1.0 | |
| Siemens Scalance Lpe9403 Firmware | <2.0 | |
| Siemens Scalance Lpe9403 |
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Reference Links
- https://github.com/golang/go/issues/46866
- https://github.com/golang/go/commit/accf363d5da864521c90b152fb734f3f15e00521
- https://github.com/golang/go/commit/ba93baa74a52d57ae79313313ea990cc791ef50e
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1997874
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1999416
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1999415
- https://access.redhat.com/errata/RHSA-2021:4156
- https://access.redhat.com/errata/RHSA-2021:4765
- https://access.redhat.com/errata/RHSA-2021:4766
- https://access.redhat.com/errata/RHSA-2022:0318
- https://access.redhat.com/errata/RHSA-2022:0557
- https://access.redhat.com/errata/RHSA-2022:0561
- https://access.redhat.com/errata/RHSA-2022:0855
- https://access.redhat.com/errata/RHSA-2022:0947
- https://access.redhat.com/errata/RHSA-2022:0577
- https://access.redhat.com/errata/RHSA-2022:1276
- https://access.redhat.com/errata/RHSA-2022:1361
- https://access.redhat.com/errata/RHSA-2022:1372
- https://access.redhat.com/errata/RHSA-2022:1396
- https://access.redhat.com/errata/RHSA-2022:4668
- https://access.redhat.com/errata/RHSA-2022:7457
- https://bugzilla.redhat.com/show_bug.cgi?id=1995656
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://groups.google.com/forum/#!forum/golang-announce
- https://groups.google.com/g/golang-announce/c/JvWG9FUUYT0
- https://groups.google.com/g/golang-announce/c/uHACNfXAZqk
- 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://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MU47VKTNXX33ZDLTI2ORRUY3KLJKU6G/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HM7U5JNS5WU66Q3S26PFIU2ITB2ATTQ4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J4AMYYHGBYMIWCCR5RCDFI5RAUJOPO5L/
- https://security.gentoo.org/glsa/202208-02
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/207036
- https://www.ibm.com/support/pages/node/7080058 (Advisory)
- https://groups.google.com/forum/#%21forum/golang-announce
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4AMYYHGBYMIWCCR5RCDFI5RAUJOPO5L/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MU47VKTNXX33ZDLTI2ORRUY3KLJKU6G/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HM7U5JNS5WU66Q3S26PFIU2ITB2ATTQ4/
Frequently Asked Questions
What is CVE-2021-36221?
CVE-2021-36221 is a vulnerability in Golang Go that can lead to a denial of service by exploiting a race condition in net/http/httputil ReverseProxy.
How does CVE-2021-36221 impact Golang Go?
CVE-2021-36221 can be exploited by a remote attacker to cause a panic in net/http/httputil ReverseProxy, resulting in a denial of service.
What is the severity of CVE-2021-36221?
The severity of CVE-2021-36221 is rated as high with a CVSS score of 7.5.
Which versions of Golang Go are affected by CVE-2021-36221?
Golang Go versions 1.15.15 and 1.16.0 to 1.16.7 are affected by CVE-2021-36221.
How can I fix CVE-2021-36221 in Golang Go?
To fix CVE-2021-36221, update Golang Go to version 1.15.15 or 1.16.7.
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