CVE-2021-35474

Dynamic stack buffer overflow in cachekey plugin

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Stack-based Buffer Overflow vulnerability in cachekey plugin of Apache Traffic Server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.

Una vulnerabilidad de desbordamiento del búfer en la región stack de la memoria en el plugin cachekey de Apache Traffic Server. Este problema afecta a Apache Traffic Server 7.0.0 a 7.1.12, 8.0.0 a 8.1.1, 9.0.0 a 9.0.1

Several vulnerabilities were discovered in Apache Traffic Server, a reverse and forward proxy server, which could result in denial of service, HTTP request smuggling or cache poisoning.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-24 CVE Reserved
2021-06-30 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3E	2021-09-20
https://www.debian.org/security/2021/dsa-4957	2021-09-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Traffic Server Search vendor "Apache" for product "Traffic Server"				>= 7.0.0 <= 7.1.12 Search vendor "Apache" for product "Traffic Server" and version " >= 7.0.0 <= 7.1.12"		-		Affected
Apache Search vendor "Apache"		Traffic Server Search vendor "Apache" for product "Traffic Server"				>= 8.0.0 <= 8.1.1 Search vendor "Apache" for product "Traffic Server" and version " >= 8.0.0 <= 8.1.1"		-		Affected
Apache Search vendor "Apache"		Traffic Server Search vendor "Apache" for product "Traffic Server"				>= 9.0.0 <= 9.0.1 Search vendor "Apache" for product "Traffic Server" and version " >= 9.0.0 <= 9.0.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected