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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:240706
[Rus]
Version
1
Class
patch
ALTXid
468916
Language
English
Severity
Critical
Title
RHSA-2019:4222 -- Red Hat OpenShift Service Mesh 1.0.3 RPMs security update
Description
An untrusted remote client may send HTTP/2 requests that write to the heap outside of the request buffers when the upstream is HTTP/1.
Malformed request header may cause bypass of route matchers resulting in escalation of privileges or information disclosure.
Malformed HTTP request without the Host header may cause abnormal termination of the Envoy process.
Family
unix
Platform
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Product
Red Hat OpenShift Service Mesh
Reference
VENDOR: RHSA-2019:4222
VENDOR: RHSA-2019:4222
Id:
RHSA-2019:4222
Reference:
https://access.redhat.com/errata/RHSA-2019:4222
CVE: CVE-2019-18801
CVE: CVE-2019-18801
Id:
CVE-2019-18801
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18801
Comment
: An issue was discovered in Envoy 1.12.0. An untrusted remote client may send HTTP/2 requests that write to the heap outside of the request buffers when the upstream is HTTP/1. This may be used to corrupt nearby heap contents (leading to a query-of-death scenario) or may be used to bypass Envoy's access control mechanisms such as path based routing. An attacker can also modify requests from other users that happen to be proximal temporally and spatially.
CVSSv2 Score:
7.5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
9.8
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE:
787 (Out-of-bounds Write)
References:
https://github.com/envoyproxy/envoy/commits/master (MISC)
https://blog.envoyproxy.io (MISC)
https://access.redhat.com/errata/RHSA-2019:4222 (MISC)
https://github.com/envoyproxy/envoy/security/advisories/GHSA-gxvv-x4p2-rppp (CONFIRM)
https://groups.google.com/forum/#%21forum/envoy-users ()
CVE: CVE-2019-18802
CVE: CVE-2019-18802
Id:
CVE-2019-18802
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18802
Comment
: An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat "header-value " as a different string from "header-value" so for example with the Host header "example.com " one could bypass "example.com" matchers.
CVSSv2 Score:
7.5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
9.8
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References:
https://github.com/envoyproxy/envoy/commits/master (MISC)
https://blog.envoyproxy.io (MISC)
https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4 (MISC)
openSUSE-SU-2020:0379 (SUSE)
https://groups.google.com/forum/#%21forum/envoy-users ()
CVE: CVE-2019-18838
CVE: CVE-2019-18838
Id:
CVE-2019-18838
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18838
Comment
: An issue was discovered in Envoy 1.12.0. Upon receipt of a malformed HTTP request without a Host header, it sends an internally generated "Invalid request" response. This internally generated response is dispatched through the configured encoder filter chain before being sent to the client. An encoder filter that invokes route manager APIs that access a request's Host header causes a NULL pointer dereference, resulting in abnormal termination of the Envoy process.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
7.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE:
476 (NULL Pointer Dereference)
References:
https://github.com/envoyproxy/envoy/commits/master (MISC)
https://blog.envoyproxy.io (MISC)
https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc (CONFIRM)
https://groups.google.com/forum/#%21forum/envoy-users ()
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