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Vulnerability details: VCID-qyex-hm2q-aaaa
Vulnerability ID VCID-qyex-hm2q-aaaa
Aliases CVE-2021-28682
Summary An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large grpc-timeout value leads to unexpected timeout calculations.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
rhas Important https://access.redhat.com/errata/RHSA-2021:1322
rhas Important https://access.redhat.com/errata/RHSA-2021:1324
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28682.json
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rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1942272
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-28682
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-28682
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-28682
archlinux Critical https://security.archlinux.org/AVG-1947
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28682.json
https://api.first.org/data/v1/epss?cve=CVE-2021-28682
https://blog.envoyproxy.io
https://github.com/envoyproxy/envoy/blob/15e3b9dbcc9aaa9d391fa8033904aad1ea1ae70d/api/envoy/api/v2/cluster.proto#L36
https://github.com/envoyproxy/envoy/releases
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg
1942272 https://bugzilla.redhat.com/show_bug.cgi?id=1942272
AVG-1947 https://security.archlinux.org/AVG-1947
cpe:2.3:a:envoyproxy:envoy:1.14.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:1.14.6:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:1.15.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:1.15.3:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:1.16.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:1.16.2:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:1.17.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:1.17.1:*:*:*:*:*:*:*
CVE-2021-28682 https://nvd.nist.gov/vuln/detail/CVE-2021-28682
ISTIO-SECURITY-2021-003 https://istio.io/latest/news/security/ISTIO-SECURITY-2021-003/
RHSA-2021:1322 https://access.redhat.com/errata/RHSA-2021:1322
RHSA-2021:1324 https://access.redhat.com/errata/RHSA-2021:1324
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28682.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: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-28682
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-28682
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://nvd.nist.gov/vuln/detail/CVE-2021-28682
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 0.19468
EPSS Score 0.00074
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.