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Vulnerability details: VCID-v537-bky8-aaak
Vulnerability ID VCID-v537-bky8-aaak
Aliases CVE-2021-36221
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
System Score Found at
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4156
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4765
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4766
rhas Moderate https://access.redhat.com/errata/RHSA-2022:0318
rhas Moderate https://access.redhat.com/errata/RHSA-2022:0557
rhas Moderate https://access.redhat.com/errata/RHSA-2022:0561
rhas Moderate https://access.redhat.com/errata/RHSA-2022:0577
rhas Moderate https://access.redhat.com/errata/RHSA-2022:0855
rhas Moderate https://access.redhat.com/errata/RHSA-2022:0947
rhas Important https://access.redhat.com/errata/RHSA-2022:1276
rhas Important https://access.redhat.com/errata/RHSA-2022:1361
rhas Important https://access.redhat.com/errata/RHSA-2022:1372
rhas Moderate https://access.redhat.com/errata/RHSA-2022:1396
rhas Moderate https://access.redhat.com/errata/RHSA-2022:4668
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-36221.json
epss 0.00195 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
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epss 0.00515 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00640 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
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epss 0.00640 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
epss 0.00975 https://api.first.org/data/v1/epss?cve=CVE-2021-36221
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1995656
cvssv3.1 5.9 https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
generic_textual MODERATE https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
cvssv3.1 7.5 https://groups.google.com/forum/#!forum/golang-announce
generic_textual HIGH https://groups.google.com/forum/#!forum/golang-announce
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2022/01/msg00016.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2022/01/msg00016.html
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2022/01/msg00017.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2022/01/msg00017.html
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-36221
cvssv3 5.9 https://nvd.nist.gov/vuln/detail/CVE-2021-36221
cvssv3.1 5.9 https://nvd.nist.gov/vuln/detail/CVE-2021-36221
archlinux Low https://security.archlinux.org/AVG-2259
cvssv3.1 5.3 https://security.gentoo.org/glsa/202208-02
generic_textual MODERATE https://security.gentoo.org/glsa/202208-02
cvssv3.1 6.6 https://www.oracle.com/security-alerts/cpujan2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpujan2022.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-36221.json
https://api.first.org/data/v1/epss?cve=CVE-2021-36221
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36221
https://groups.google.com/forum/#%21forum/golang-announce
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%40lists.fedoraproject.org/message/2MU47VKTNXX33ZDLTI2ORRUY3KLJKU6G/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HM7U5JNS5WU66Q3S26PFIU2ITB2ATTQ4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4AMYYHGBYMIWCCR5RCDFI5RAUJOPO5L/
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
1995656 https://bugzilla.redhat.com/show_bug.cgi?id=1995656
991961 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991961
AVG-2259 https://security.archlinux.org/AVG-2259
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
CVE-2021-36221 https://nvd.nist.gov/vuln/detail/CVE-2021-36221
RHSA-2021:4156 https://access.redhat.com/errata/RHSA-2021:4156
RHSA-2021:4765 https://access.redhat.com/errata/RHSA-2021:4765
RHSA-2021:4766 https://access.redhat.com/errata/RHSA-2021:4766
RHSA-2022:0318 https://access.redhat.com/errata/RHSA-2022:0318
RHSA-2022:0557 https://access.redhat.com/errata/RHSA-2022:0557
RHSA-2022:0561 https://access.redhat.com/errata/RHSA-2022:0561
RHSA-2022:0577 https://access.redhat.com/errata/RHSA-2022:0577
RHSA-2022:0855 https://access.redhat.com/errata/RHSA-2022:0855
RHSA-2022:0947 https://access.redhat.com/errata/RHSA-2022:0947
RHSA-2022:1276 https://access.redhat.com/errata/RHSA-2022:1276
RHSA-2022:1361 https://access.redhat.com/errata/RHSA-2022:1361
RHSA-2022:1372 https://access.redhat.com/errata/RHSA-2022:1372
RHSA-2022:1396 https://access.redhat.com/errata/RHSA-2022:1396
RHSA-2022:4668 https://access.redhat.com/errata/RHSA-2022:4668
RHSA-2022:7457 https://access.redhat.com/errata/RHSA-2022:7457
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-36221.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Found at https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://groups.google.com/forum/#!forum/golang-announce
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2022/01/msg00016.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2022/01/msg00017.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-36221
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-36221
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-36221
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://security.gentoo.org/glsa/202208-02
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://www.oracle.com/security-alerts/cpujan2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.38521
EPSS Score 0.00195
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.