CVE-2020-28949: Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as fil
Noroxi assessment
Priority: Now (action score 86/100)
- CISA has confirmed exploitation in the wild (Aug 25, 2022). Remediation deadline for US federal agencies: Sep 15, 2022.
- A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
- Probability of exploitation in the next 30 days: 84.5% (FIRST EPSS); higher than 99.7% of all records.
- Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- Fixed version: apcu-panel (AlmaLinux:8) 5.1.18-1.module_el8.6.0+2750+78feabcb; libzip (AlmaLinux:8) 1.6.1-1.module_el8.6.0+2750+78feabcb, 1.6.1-1.module_el8.6.0+3239+bedf0508; libzip-devel (AlmaLinux:8) 1.6.1-1.module_el8.6.0+2750+78feabcb, 1.6.1-1.module_el8.6.0+3239+bedf0508.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Patch today or shut off access. Upgrade to apcu-panel (AlmaLinux:8) 5.1.18-1.module_el8.6.0+2750+78feabcb; libzip (AlmaLinux:8) 1.6.1-1.module_el8.6.0+2750+78feabcb, 1.6.1-1.module_el8.6.0+3239+bedf0508; libzip-devel (AlmaLinux:8) 1.6.1-1.module_el8.6.0+2750+78feabcb, 1.6.1-1.module_el8.6.0+3239+bedf0508 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
- Published
- Nov 19, 2020
- Updated
- Jun 16, 2026
- EPSS
- 84.5% · 99th percentile
- CWE
- —
Report tools
Action score
86
Now
Patch today or shut off access.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 25 / 30 · 84.5%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Aug 25, 2022. That signals real attacks, not theory.
Remediation deadline for US federal agencies: Sep 15, 2022.
Get told when this record changes
- In CISA KEV: exploitation in the wild confirmed
- Weaponized exploit exists
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Running WordPress? Scan your site free with WP Lens
Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| php | archive tar | cpe:2.3:a:php:archive_tar |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| drupal | drupal | cpe:2.3:a:drupal:drupal |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- debian debian linux9.0
- drupal drupal8.0.0 and later · before 8.9.10
- drupal drupal8.8.0 and later · before 8.8.12
- drupal drupal7.0 and later · before 7.75
- drupal drupal9.0.0 and later · before 9.0.9
- fedoraproject fedora32
- fedoraproject fedora33
- fedoraproject fedora34
- fedoraproject fedora35
- php archive tarbefore 1.4.12
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | apcu-panel | before 5.1.18-1.module_el8.6.0+2750+78feabcb | 5.1.18-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip | before 1.6.1-1.module_el8.6.0+2750+78feabcb | 1.6.1-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip | before 1.6.1-1.module_el8.6.0+3239+bedf0508 | 1.6.1-1.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | libzip-devel | before 1.6.1-1.module_el8.6.0+2750+78feabcb | 1.6.1-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip-devel | before 1.6.1-1.module_el8.6.0+3239+bedf0508 | 1.6.1-1.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | libzip-tools | before 1.6.1-1.module_el8.6.0+2750+78feabcb | 1.6.1-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip-tools | before 1.6.1-1.module_el8.6.0+3239+bedf0508 | 1.6.1-1.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-bcmath | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-bcmath | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-cli | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-cli | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-common | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-common | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-dba | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-dba | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-dbg | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-dbg | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-devel | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-devel | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-embedded | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php-embedded | before 7.4.19-4.module_el8.6.0+3238+624bf8b8 | 7.4.19-4.module_el8.6.0+3238+624bf8b8 |
| AlmaLinux:8 | php-enchant | before 7.4.19-4.module_el8.6.0+3239+bedf0508 | 7.4.19-4.module_el8.6.0+3239+bedf0508 |
+96
Same product
php: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-36193Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a relatKEV81Now
- CVE-2021-32610In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.50Plan
- CVE-2020-28948Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.45Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:apcu-panel | 5.1.18-1.module_el8.6.0+2750+78feabcb · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip | 1.6.1-1.module_el8.6.0+2750+78feabcb · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip-devel | 1.6.1-1.module_el8.6.0+2750+78feabcb · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip-tools | 1.6.1-1.module_el8.6.0+3239+bedf0508 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php | 7.4.19-4.module_el8.6.0+3238+624bf8b8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-bcmath | 7.4.19-4.module_el8.6.0+3238+624bf8b8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-cli | 7.4.19-4.module_el8.6.0+3239+bedf0508 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-common | 7.4.19-4.module_el8.6.0+3239+bedf0508 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-dba | 7.4.19-4.module_el8.6.0+3238+624bf8b8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-dbg | 7.4.19-4.module_el8.6.0+3238+624bf8b8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-devel | 7.4.19-4.module_el8.6.0+3238+624bf8b8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-embedded | 7.4.19-4.module_el8.6.0+3239+bedf0508 · AlmaLinux:8 | Package registry (OSV) |
| alpine:drupal7 | 7.75-r0 · Alpine:v3.11 | Package registry (OSV) |
| debian:drupal7 | 7.52-2+deb9u13 · Debian:9 | Package registry (OSV) |
| debian:php-pear | 1:1.10.9+submodules+notgz-1.1 · Debian:12 | Package registry (OSV) |
| Packagist:drupal/core | 8.8.12 | Package registry (OSV) |
| Packagist:drupal/core | 8.9.10 | Package registry (OSV) |
| Packagist:drupal/core | 9.0.9 | Package registry (OSV) |
| Packagist:pear/archive_tar | 1.4.11 | Package registry (OSV) |
| red hat:apcu-panel | 0:5.1.18-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:libzip | 0:1.6.1-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:libzip-debuginfo | 0:1.6.1-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:libzip-debugsource | 0:1.6.1-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:libzip-devel | 0:1.6.1-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:libzip-tools | 0:1.6.1-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:libzip-tools-debuginfo | 0:1.6.1-1.module+el8.3.0+6678+b09f589e · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:php | 0:7.4.6-5.module+el8.4.0+15727+276bb227 · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:php-bcmath | 0:7.4.6-5.module+el8.4.0+15727+276bb227 · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:php-bcmath-debuginfo | 0:7.4.6-5.module+el8.4.0+15727+276bb227 · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
| red hat:php-cli | 0:7.4.6-5.module+el8.4.0+15727+276bb227 · Red Hat:rhel_eus:8.4::appstream | Package registry (OSV) |
+8
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Metasploit module | exploit/multi/fileformat/archive_tar_arb_file_writePEAR Archive_Tar 1.4.10 Arbitrary File Writeexploit | 2020-11-17 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-3 d
- Published
- CISA KEV+643 d
- TodayNov 8, 2026+2180 d
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-20-994 · Nov 26, 2020(Drupal Güvenlik Güncellemesi Yayınladı)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (10 more)Show less
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4V35LBRM6HBCXBVCITKQ4UEBTXO2EG7B/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBYZSHYTIOBK6V7C4N7TP6KIKCRKLVWP/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/
- security.gentoo.org/glsa/202101-23
- www.debian.org/security/2020/dsa-4817
- www.drupal.org/sa-core-2020-013
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-28949
Vendor advisories and official records. Exploit/PoC links are deliberately left out.