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Vulnerability details: VCID-zwcz-r1fe-aaak
Vulnerability ID VCID-zwcz-r1fe-aaak
Aliases CVE-2019-18817
GHSA-vc7h-cmp3-4hw5
Summary CVE-2019-18817 istio/envoy: infinite loop in Envoy, and subsequently Istio leads to a DoS
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-18817.json
epss 0.00102 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
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epss 0.00102 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00102 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
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epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
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epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
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epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
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epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.00536 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
epss 0.01117 https://api.first.org/data/v1/epss?cve=CVE-2019-18817
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1770956
cvssv3.1 7.6 https://github.com/istio/istio
generic_textual HIGH https://github.com/istio/istio
cvssv3.1 7.5 https://github.com/istio/istio/commit/7570a1f5b56c108aed6ecfa5d2a6048f444bfb37
generic_textual HIGH https://github.com/istio/istio/commit/7570a1f5b56c108aed6ecfa5d2a6048f444bfb37
cvssv3.1 7.5 https://github.com/istio/istio/issues/18229
generic_textual HIGH https://github.com/istio/istio/issues/18229
cvssv3.1 7.5 https://github.com/istio/istio/issues/18229#issuecomment-553190142
generic_textual HIGH https://github.com/istio/istio/issues/18229#issuecomment-553190142
cvssv3.1 7.5 https://istio.io/news/2019/announcing-1.3.5
generic_textual HIGH https://istio.io/news/2019/announcing-1.3.5
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2019-18817
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-18817
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-18817
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-18817.json
https://api.first.org/data/v1/epss?cve=CVE-2019-18817
https://github.com/istio/istio
https://github.com/istio/istio/commit/7570a1f5b56c108aed6ecfa5d2a6048f444bfb37
https://github.com/istio/istio/issues/18229
https://github.com/istio/istio/issues/18229#issuecomment-553190142
https://istio.io/news/2019/announcing-1.3.5
https://istio.io/news/2019/announcing-1.3.5/
1770956 https://bugzilla.redhat.com/show_bug.cgi?id=1770956
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
CVE-2019-18817 https://nvd.nist.gov/vuln/detail/CVE-2019-18817
ISTIO-SECURITY-2019-006 https://istio.io/latest/news/security/ISTIO-SECURITY-2019-006/
No exploits are available.
Vector: CVSS:3.0/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-2019-18817.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:A/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N Found at https://github.com/istio/istio
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://github.com/istio/istio/commit/7570a1f5b56c108aed6ecfa5d2a6048f444bfb37
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://github.com/istio/istio/issues/18229
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://github.com/istio/istio/issues/18229#issuecomment-553190142
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://istio.io/news/2019/announcing-1.3.5
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-2019-18817
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-2019-18817
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-2019-18817
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 0.42757
EPSS Score 0.00102
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.