CVE-2021-33196

golang: archive/zip: malformed archive may cause panic or memory exhaustion

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In archive/zip in Go before 1.15.13 and 1.16.x before 1.16.5, a crafted file count (in an archive's header) can cause a NewReader or OpenReader panic.

En archive/zip en Go versiones anteriores a 1.15.13 y versiones 1.16.x anteriores a 1.16.5, un recuento de archivos crafteado (en la cabecera de un archivo) puede causar un pánico en NewReader u OpenReader.

A vulnerability was found in archive/zip of the Go standard library. Applications written in Go can panic or potentially exhaust system memory when parsing malformed ZIP files.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-19 CVE Reserved
2021-07-01 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-11-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (8)

URL	Tag	Source
https://groups.google.com/g/golang-announce	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00016.html	Mailing List
https://lists.debian.org/debian-lts-announce/2022/01/msg00017.html	Mailing List
https://lists.debian.org/debian-lts-announce/2023/04/msg00021.html	Mailing List

URL	Date	SRC
https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202208-02	2023-04-20
https://access.redhat.com/security/cve/CVE-2021-33196	2021-10-18
https://bugzilla.redhat.com/show_bug.cgi?id=1965503	2021-10-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Golang Search vendor "Golang"		Go Search vendor "Golang" for product "Go"				< 1.15.13 Search vendor "Golang" for product "Go" and version " < 1.15.13"		-		Affected
Golang Search vendor "Golang"		Go Search vendor "Golang" for product "Go"				>= 1.16.0 < 1.16.5 Search vendor "Golang" for product "Go" and version " >= 1.16.0 < 1.16.5"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected