CVE-2021-36221
Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic upon an ErrAbortHandler abort.
02 Description
Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic upon an ErrAbortHandler abort.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.11% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 87.3% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-08 00:00Z5 YR AGO
- Last updated
- 2024-08-04 00:54Z2 YR AGO
- Reserved
- 2021-07-07
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
- Data version
- 5.1
- Document digest
- b26334d09e6f6c5286d65d2666bf2c2317b105ed75a44415cb9ecd8638202ee8
05 Affected products
06 References
- groups.google.comhttps://groups.google.com/forum/#%21forum/golang-announce
- groups.google.comhttps://groups.google.com/g/golang-announce/c/JvWG9FUUYT0
- lists.fedoraproject.orgFEDORA-2021-38b51d9fd3https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4AMYYHGBYMIWCCR5RCDFI5RAUJOPO5L/
- lists.fedoraproject.orgFEDORA-2021-6a3024b3fdhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MU47VKTNXX33ZDLTI2ORRUY3KLJKU6G/
- lists.fedoraproject.orgFEDORA-2021-e71b05ba7bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HM7U5JNS5WU66Q3S26PFIU2ITB2ATTQ4/
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.html
- groups.google.comhttps://groups.google.com/g/golang-announce/c/uHACNfXAZqk
- lists.debian.org[debian-lts-announce] 20220121 [SECURITY] [DLA 2891-1] golang-1.8 security updatehttps://lists.debian.org/debian-lts-announce/2022/01/msg00016.html
- lists.debian.org[debian-lts-announce] 20220121 [SECURITY] [DLA 2892-1] golang-1.7 security updatehttps://lists.debian.org/debian-lts-announce/2022/01/msg00017.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- security.gentoo.orgGLSA-202208-02https://security.gentoo.org/glsa/202208-02
- lists.debian.org[debian-lts-announce] 20230419 [SECURITY] [DLA 3395-1] golang-1.11 security updatehttps://lists.debian.org/debian-lts-announce/2023/04/msg00021.html
07 Fixed in
AlmaLinux 8
- delve Fixed in 1.6.0-1.module_el8.5.0+2604+960c7771
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Arch Linux
- go Fixed in 2:1.16.7-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 8
- delve Fixed in 1.6.0-1.module_el8.5.0+2604+960c7771
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 11
- golang-1.15 Fixed in 1.15.15-1~deb11u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- golang-1.10 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- golang-1.10 No fix yet
- golang-1.6 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- golang-1.10 No fix yet
- golang-1.8 No fix yet
- golang-1.9 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- golang-1.13 No fix yet
- golang-1.14 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- golang-1.13 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- golang-1.13 No fix yet
- golang-1.16 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- golang-1.16 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 22.04 LTS
- golang-1.13 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.