CVE-2020-36193

PEAR Archive_Tar Improper Link Resolution Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.

El archivo Tar.php en Archive_Tar versiones hasta 1.4.11, permite operaciones de escritura con Salto de Directorio debido a una comprobación inadecuada de enlaces simbólicos, un problema relacionado al CVE-2020-28948

A flaw was found in the Archive_Tar package. Archive_Tar could allow a remote attacker to traverse directories on the system caused by inadequate checking of symbolic links. An attacker could send a specially-crafted URL request to the Tar.php script containing "dot dot" sequences (/../) to modify arbitrary files on the system.

PEAR Archive_Tar Tar.php allows write operations with directory traversal due to inadequate checking of symbolic links. PEAR stands for PHP Extension and Application Repository and it is an open-source framework and distribution system for reusable PHP components with known usage in third-party products such as Drupal Core and Red Hat Linux.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-18 CVE Reserved
2021-01-18 CVE Published
2022-08-25 Exploited in Wild
2022-09-15 KEV Due Date
2024-06-29 EPSS Updated
2024-08-04 CVE Updated
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-59: Improper Link Resolution Before File Access ('Link Following')

CAPEC

References (12)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2021/01/msg00018.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/04/msg00007.html	Mailing List
https://www.drupal.org/sa-core-2021-001	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916	2024-06-28

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR	2024-06-28
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2	2024-06-28
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N	2024-06-28
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH	2024-06-28
https://security.gentoo.org/glsa/202101-23	2024-06-28
https://www.debian.org/security/2021/dsa-4894	2024-06-28
https://access.redhat.com/security/cve/CVE-2020-36193	2022-11-02
https://bugzilla.redhat.com/show_bug.cgi?id=1942961	2022-11-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Php Search vendor "Php"		Archive Tar Search vendor "Php" for product "Archive Tar"				<= 1.4.11 Search vendor "Php" for product "Archive Tar" and version " <= 1.4.11"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		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
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
Drupal Search vendor "Drupal"		Drupal Search vendor "Drupal" for product "Drupal"				>= 7.0 < 7.78 Search vendor "Drupal" for product "Drupal" and version " >= 7.0 < 7.78"		-		Affected
Drupal Search vendor "Drupal"		Drupal Search vendor "Drupal" for product "Drupal"				>= 8.9.0 < 8.9.13 Search vendor "Drupal" for product "Drupal" and version " >= 8.9.0 < 8.9.13"		-		Affected
Drupal Search vendor "Drupal"		Drupal Search vendor "Drupal" for product "Drupal"				>= 9.0.0 < 9.0.11 Search vendor "Drupal" for product "Drupal" and version " >= 9.0.0 < 9.0.11"		-		Affected
Drupal Search vendor "Drupal"		Drupal Search vendor "Drupal" for product "Drupal"				>= 9.1.0 < 9.1.3 Search vendor "Drupal" for product "Drupal" and version " >= 9.1.0 < 9.1.3"		-		Affected