Heap-based Buffer Overflow in 7zip Product by 7-Zip
CVE-2016-2334

7.8HIGH

Key Information:

Vendor
7-zip
Status
7-zip
Vendor
CVE Published:
13 December 2016

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 17%

Summary

A heap-based buffer overflow vulnerability exists in the NArchive::NHfs::CHandler::ExtractZlibFile method of the 7zip software suite. This issue allows remote attackers to execute arbitrary code by utilizing a specially crafted HFS+ image. The flaw affects versions of 7zip prior to 16.00, raising significant security concerns for users who work with files from untrusted sources. Timely updates and proper validation of input files are essential to mitigate the associated 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.

CVE-2016-2334
Created by icewall

References

https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA
http://blog.talosintelligence.com/2017/11/exploiting-cve-...
x_refsource_MISC
http://www.talosintel.com/reports/TALOS-2016-0093/
x_refsource_MISC

EPSS Score

17% 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

.