Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.
Priority MEDIUM 64CWE-502Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 4 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-502.
Summary
Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.
Why it matters now
EPSS 0.47493 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial pear/archive_tar (Packagist): 1.4.11Red Hat: 3 advisoriesRed Hat: 4 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | pear/archive_tar (Packagist) | before 1.4.11 | 1.4.11 | Patch available | GHSA-jh5x-hfhg-78jq |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- pear/archive_tar (Packagist) Vendor— Affected before 1.4.11 Fixed in 1.4.11 Patch available GHSA-jh5x-hfhg-78jq
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:archive_tar:*:*:*:*:*:*:*:* | before 1.4.11 | Vulnerable | PHP |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 35 | Vulnerable | Fedoraproject |
| cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* | 7.0 to before 7.75; 8.0.0 to before 8.9.10; 8.8.0 to before 8.8.12; 9.0.0 to before 9.0.9 | Vulnerable | Drupal |
- cpe:2.3:a:php:archive_tar:*:*:*:*:*:*:*:* Versions before 1.4.11 Vulnerable ·PHP
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
- cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* Versions 7.0 to before 7.75; 8.0.0 to before 8.9.10; 8.8.0 to before 8.8.12; 9.0.0 to before 9.0.9 Vulnerable ·Drupal
Remediation
- Fix · GHSA-jh5x-hfhg-78jq pear/archive_tar (Packagist) Fixed in 1.4.11 Advisory →
Red Hat 3 advisories
- RHSA-2022:7340 Released 2022-11-02 · Red Hat rating Moderatephp-pear security update
- Red Hat Enterprise Linux Server (v. 7) php-pear-1:1.9.4-23.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) php-pear-1:1.9.4-23.el7_9
- RHSA-2022:6542 Released 2022-09-15 · Red Hat rating Moderatephp:7.4 security update
- Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.18-1.module+el8.3.0+6678+b09f589e.noarch::php:7.4, libzip-1.6.1-1.module+el8.3.0+6678+b09f589e.aarch64::php:7.4, libzip-1.6.1-1.module+el8.3.0+6678+b09f589e.ppc64le::php:7.4 +47
- RHSA-2022:6541 Released 2022-09-15 · Red Hat rating Moderatephp:7.4 security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) apcu-panel-5.1.18-1.module+el8.3.0+6678+b09f589e.noarch::php:7.4, libzip-1.6.1-1.module+el8.3.0+6678+b09f589e.aarch64::php:7.4, libzip-1.6.1-1.module+el8.3.0+6678+b09f589e.ppc64le::php:7.4 +47
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2022:6542 |
| Red Hat Enterprise Linux AppStream EUS (v.8.4) | Fixed | RHSA-2022:6541 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2022:7340 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2022:7340 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28948
- 2026-10-03 Alias added: GHSA-jh5x-hfhg-78jq
References
Advisory 11
- https://www.drupal.org/sa-core-2020-013
- [debian-lts-announce] 20201127 [SECURITY] [DLA 2466-1] drupal7 security update
- FEDORA-2020-f351eb14e3
- FEDORA-2020-5271a896ff
- FEDORA-2020-6f1079934c
- FEDORA-2020-d50d74d6f2
- DSA-4817
- GLSA-202101-23
- FEDORA-2021-8093e197f4
- FEDORA-2021-0c013f520c
- https://nvd.nist.gov/vuln/detail/CVE-2020-28948
Other 8
- https://github.com/pear/Archive_Tar/commit/0670a05fdab997036a3fc3ef113b8f5922e574da
- https://github.com/pear/Archive_Tar
- https://lists.fedoraproject.org/archives/list/[email protected]/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.fedoraproject.org/archives/list/[email protected]/message/4V35LBRM6HBCXBVCITKQ4UEBTXO2EG7B
- https://lists.fedoraproject.org/archives/list/[email protected]/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437
- https://lists.fedoraproject.org/archives/list/[email protected]/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT
- https://lists.fedoraproject.org/archives/list/[email protected]/message/NBYZSHYTIOBK6V7C4N7TP6KIKCRKLVWP
- https://lists.fedoraproject.org/archives/list/[email protected]/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N
Sources
- CVE-2020-28948 · CVE Program
- CVE-2020-28948 · NVD
- FIRST EPSS
- GHSA-jh5x-hfhg-78jq · GitHub Advisory Database · CC BY 4.0
- CVE-2020-28948 · Red Hat security data · CC BY 4.0
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