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Vulnerability details: VCID-pbmp-naqq-aaam
Vulnerability ID VCID-pbmp-naqq-aaam
Aliases CVE-2021-29258
Summary An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-617 Reachable Assertion
CWE-476 NULL Pointer Dereference
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-2021-29258.json
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rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1942280
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-29258
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-29258
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-29258
archlinux Critical https://security.archlinux.org/AVG-1947
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29258.json
https://api.first.org/data/v1/epss?cve=CVE-2021-29258
https://blog.envoyproxy.io
https://github.com/envoyproxy/envoy/releases/tag/v1.14.0
https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg
https://github.com/envoyproxy/envoy-setec/pull/230
1942280 https://bugzilla.redhat.com/show_bug.cgi?id=1942280
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-2021-29258 https://nvd.nist.gov/vuln/detail/CVE-2021-29258
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-2021-29258.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-2021-29258
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-2021-29258
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-2021-29258
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 0.27199
EPSS Score 0.00116
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.