CVE-2020-36193
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 products such as Drupal Core and Red Hat Linux.
CISA KEV
- Vendor
- PEAR
- Product
- Archive_Tar
- Due date
- 2022-09-15
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 9.1.7-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1:1.10.12+submodules+notgz+20210212-1 |
| sid | Fixed | 1:1.10.12+submodules+notgz+20210212-1 |
| forky | Fixed | 1:1.10.12+submodules+notgz+20210212-1 |
| bullseye | Fixed | 1:1.10.12+submodules+notgz+20210212-1 |
| bookworm | Fixed | 1:1.10.12+submodules+notgz+20210212-1 |
Red Hat Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8 | Fixed | — |
Rocky Linux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8 | Fixed | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | pear/archive_tar | <1.4.13 | 1.4.13 |
References
- https://security.archlinux.org/ASA-202102-7
- https://www.suse.com/security/cve/CVE-2020-36193.html
- https://errata.rockylinux.org/RLSA-2022:6542
- https://security-tracker.debian.org/tracker/CVE-2020-36193
- https://nvd.nist.gov/vuln/detail/CVE-2020-36193
- https://github.com/pear/Archive_Tar/issues/35
- https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916
- https://www.drupal.org/sa-core-2021-001
- https://www.debian.org/security/2021/dsa-4894
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-36193
- https://security.gentoo.org/glsa/202101-23
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.debian.org/debian-lts-announce/2021/04/msg00007.html
- https://lists.debian.org/debian-lts-announce/2021/01/msg00018.html
- https://github.com/pear/Archive_Tar
- https://github.com/FriendsOfPHP/security-advisories/blob/master/pear/archive_tar/CVE-2020-36193.yaml
- 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
- https://access.redhat.com/errata/RHSA-2022:6542
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.