VDB-175423 · CVE-2021-29258 · GCVE-0-2021-29258

Envoy up to 1.13.x HTTP/2 Metadata assertion

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Envoy up to 1.13.x and classified as critical. The affected element is an unknown function of the component HTTP2 Metadata Handler. This manipulation causes assertion. This vulnerability appears as CVE-2021-29258. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Envoy up to 1.13.x and classified as critical. Affected by this vulnerability is an unknown part of the component HTTP2 Metadata Handler. The manipulation with an unknown input leads to a assertion vulnerability. The CWE definition for the vulnerability is CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. The impact remains unknown.

The weakness was presented 05/21/2021. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2021-29258. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.14.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Name

Envoy

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Assertion
CWE: CWE-617
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Envoy 1.14.0

Timelineinfo

03/26/2021 🔍
05/21/2021 +55 days 🔍
05/21/2021 +0 days 🔍
05/23/2021 +2 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-29258 (🔍)
GCVE (CVE): GCVE-0-2021-29258
GCVE (VulDB): GCVE-100-175423

Entryinfo

Created: 05/21/2021 07:17
Updated: 05/23/2021 09:14
Changes: 05/21/2021 07:17 (37), 05/23/2021 09:14 (5)
Complete: 🔍
Cache ID: 216::103