Unserialization Threat in Archive_Tar by PEAR
CVE-2020-28948

7.8HIGH

Key Information:

Vendor
PHP
Status
Archive Tar
Vendor
CVE Published:
19 November 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 74%

Summary

The Archive_Tar component through version 1.4.10 is susceptible to an unserialization attack. While the 'phar:' stream is blocked, the 'PHAR:' stream remains unblocked, leading to potential exploitation. This behavior makes applications using Archive_Tar vulnerable to unauthorized data manipulation and execution, emphasizing the need for vigilance in application design and security practices.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-28948-and-CVE-2020-28949
Created by 0x240x23elu

cve-2020-28948
Created by nopdata

PoC-for-CVE-2020-28948-CVE-2020-28949
Created by JinHao-L

References

https://github.com/pear/Archive_Tar/issues/33
x_refsource_MISC
https://www.drupal.org/sa-core-2020-013
x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2020/11/msg0...
mailing-listx_refsource_MLIST

EPSS Score

74% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.