Envoy 1.12.0 HTTP Header memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

A vulnerability has been found in Envoy 1.12.0 and classified as critical. Affected by this vulnerability is some unknown processing of the component HTTP Header Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 12/13/2019. This vulnerability is known as CVE-2019-18802 since 11/07/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-147182 and VDB-147180.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/07/2019 🔍
12/13/2019 +36 days 🔍
12/14/2019 +1 days 🔍
03/12/2024 +1550 days 🔍

Sourcesinfo

Advisory: GHSA-356m-vhw2-wcm4
Status: Not defined

CVE: CVE-2019-18802 (🔍)
See also: 🔍

Entryinfo

Created: 12/14/2019 03:00 PM
Updated: 03/12/2024 07:56 AM
Changes: 12/14/2019 03:00 PM (35), 12/14/2019 03:05 PM (17), 03/12/2024 07:56 AM (4)
Complete: 🔍
Cache ID: 18:92C:40

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