CVE-2020-36193 : Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Tra

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.

Published 2021-01-18 20:15:13

Updated 2022-01-01 18:13:08

Source MITRE

View at NVD, CVE.org

Vulnerability category: Directory traversal

Products affected by CVE-2020-36193

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
PHP » Archive Tar
Versions up to, including, (<=) 1.4.11
cpe:2.3:a:php:archive_tar:*:*:*:*:*:*:*:*
Matching versions
Drupal » Drupal
Versions from including (>=) 9.0.0 and before (<) 9.0.11
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
Matching versions
Drupal » Drupal
Versions from including (>=) 7.0 and before (<) 7.78
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
Matching versions
Drupal » Drupal
Versions from including (>=) 8.9.0 and before (<) 8.9.13
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
Matching versions
Drupal » Drupal
Versions from including (>=) 9.1.0 and before (<) 9.1.3
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 33
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Matching versions

CVE-2020-36193 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

PEAR Archive_Tar Improper Link Resolution Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

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 prod

Notes:

https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916, https://www.drupal.org/sa-core-2021-001, https://access.redhat.com/security/cve/cve-2020-36193; https://nvd.nist.gov/vuln/detail/CVE-2020-36193

Added on 2022-08-25 Action due date 2022-09-15

Exploit prediction scoring system (EPSS) score for CVE-2020-36193

EPSS FAQ

88.20%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 99 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-36193

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:P/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: None

CWE ids for CVE-2020-36193

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Assigned by: nvd@nist.gov (Primary)
CWE-59 Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-36193

https://www.debian.org/security/2021/dsa-4894

Debian -- Security Information -- DSA-4894-1 php-pear
Third Party Advisory
https://security.gentoo.org/glsa/202101-23

PEAR Archive_Tar: Directory traversal (GLSA 202101-23) — Gentoo security
Third Party Advisory

CVEs referencing this url
https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916

Disallow symlinks to out-of-path filenames · pear/Archive_Tar@cde4605 · GitHub
Patch;Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00018.html

[SECURITY] [DLA-2530-1] drupal7 security update
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2/

[SECURITY] Fedora 33 Update: php-pear-1.10.12-5.fc33 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/

[SECURITY] Fedora 34 Update: drupal7-7.82-1.fc34 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH/

[SECURITY] Fedora 32 Update: php-pear-1.10.12-5.fc32 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/

[SECURITY] Fedora 35 Update: drupal7-7.82-1.fc35 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2021/04/msg00007.html

[SECURITY] [DLA 2621-1] php-pear security update
Mailing List;Third Party Advisory
https://www.drupal.org/sa-core-2021-001

Drupal core - Critical - Third-party libraries - SA-CORE-2021-001 | Drupal.org
Third Party Advisory