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Vulnerability details: VCID-e3es-g515-aaac
Vulnerability ID VCID-e3es-g515-aaac
Aliases CVE-2023-27491
Summary Multiple CVEs reported by Envoy.
Status Published
Exploitability 0.5
Weighted Severity 8.2
Risk 4.1
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-20 Improper Input Validation
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-27491.json
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
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epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
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epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
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epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
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epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00133 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
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epss 0.00133 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00133 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
epss 0.00133 https://api.first.org/data/v1/epss?cve=CVE-2023-27491
cvssv3.1 5.4 https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
cvssv3.1 5.4 https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
ssvc Track https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
cvssv3.1 5.4 https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1
ssvc Track https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1
cvssv3.1 5.4 https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
cvssv3.1 5.4 https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
ssvc Track https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
ssvc Track https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
cvssv3 9.1 https://nvd.nist.gov/vuln/detail/CVE-2023-27491
cvssv3.1 9.1 https://nvd.nist.gov/vuln/detail/CVE-2023-27491
cvssv3.1 5.4 https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2
ssvc Track https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-27491.json
https://api.first.org/data/v1/epss?cve=CVE-2023-27491
https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1
https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2
2179138 https://bugzilla.redhat.com/show_bug.cgi?id=2179138
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
CVE-2023-27491 https://nvd.nist.gov/vuln/detail/CVE-2023-27491
ISTIO-SECURITY-2023-001 https://istio.io/latest/news/security/ISTIO-SECURITY-2023-001/
RHSA-2023:4623 https://access.redhat.com/errata/RHSA-2023:4623
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-27491.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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
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:R/S:U/C:L/I:L/A:N Found at https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-11T16:14:39Z/ Found at https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-11T16:14:39Z/ Found at https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
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:R/S:U/C:L/I:L/A:N Found at https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-11T16:14:39Z/ Found at https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-11T16:14:39Z/ Found at https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-27491
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:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-27491
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:R/S:U/C:L/I:L/A:N Found at https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-11T16:14:39Z/ Found at https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2
Exploit Prediction Scoring System (EPSS)
Percentile 0.02645
EPSS Score 0.00017
Published At April 15, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.