Memory Corruption Vulnerability in zlib Compression Library
CVE-2018-25032

7.5HIGH

Key Information:

Vendor

Zlib

Status
Zlib
Vendor
CVE Published:
25 March 2022

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 51%

What is CVE-2018-25032?

The zlib compression library, prior to version 1.2.12, is susceptible to a memory corruption issue that arises during the deflation process. This vulnerability can be exploited when the input data has multiple distant matches, potentially allowing attackers to manipulate memory and disrupt normal operations. Updating to the latest version is essential to mitigate these risks.

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.

external_zlib_4.4_CVE-2018-25032
Created by Trinadh465

external_zlib-1.2.7_CVE-2018-25032
Created by Satheesh575555

external_zlib_AOSP10_r33_CVE-2018-25032
Created by Trinadh465

References

https://www.openwall.com/lists/oss-security/2022/03/24/1
https://github.com/madler/zlib/commit/5c44459c3b28a9bd328...
http://www.openwall.com/lists/oss-security/2022/03/25/2
mailing-list

EPSS Score

51% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.