Vulnerability Monitor

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CVE-2017-17969

Heap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method in 7-Zip before 18.00 and p7zip allows remote attackers to cause a denial of service (out-of-bounds write) or potentially execute arbitrary code via a crafted ZIP archive.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.8, requiring local system access to exploit with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 3 products from 7-zip, from 7-zip, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-01-30T16:29:00.217

Last Modified

2025-01-10T19:15:27.680

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	7-zip	7-zip	< 18.00	Yes
Application	7-zip	p7zip	< 18.0	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes

References

http://www.securitytracker.com/id/1040831 ([email protected])
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html ([email protected])
https://github.com/p7zip-project/p7zip/issues/7 ([email protected])
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ Exploit, Technical Description, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html Mailing List, Third Party Advisory ([email protected])
https://usn.ubuntu.com/3913-1/ ([email protected])
https://www.debian.org/security/2018/dsa-4104 Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1040831 (af854a3a-2127-422b-91ae-364da2661108)
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html (af854a3a-2127-422b-91ae-364da2661108)
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ Exploit, Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3913-1/ (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2018/dsa-4104 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For 7-zip's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.