Integer Overflow Vulnerability in GNU cpio Affects Arbitrary Code Execution
CVE-2021-38185
7.8HIGH
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
Summary
The GNU cpio product version 2.13 is vulnerable to an integer overflow that allows attackers to execute arbitrary code via a specially crafted pattern file. The issue stems from the ds_fgetstr function within the dstring.c file, which can lead to an out-of-bounds write in the heap memory, potentially compromising the security of the system. It remains unclear whether the pattern file is always considered untrusted data, opening avenues for exploitation under certain conditions.
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.
References
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
Vulnerability published
Vulnerability Reserved
- 🟡
Public PoC available
- 👾
Exploit known to exist