CRITICAL
p7zip: heap-based buffer overflow in 7zip/Compress/ShrinkDecoder.cpp can allow an attacker to write arbitrary data and cause a crash
Published Jan 30, 2018
9.1
CRITICALCVSS 3.0
EPSS 4.94%
Description
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.
Affected products
No data.
Configuration 2
OR
- 7.0
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 8
p7zip
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | p7zip | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.8 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
9.1 CRITICAL Red Hat
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
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
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.94% 0.04938
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.04938
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.94% (0.04938) | 91.88th | v5 (v2026.06.15) |
| Sep 22, 2026 | 4.94% (0.04938) | 91.75th | v5 (v2026.06.15) |
| Sep 21, 2026 | 7.50% (0.07504) | 94.30th | v5 (v2026.06.15) |
| Sep 6, 2026 | 4.94% (0.04938) | 91.57th | v5 (v2026.06.15) |
| Sep 5, 2026 | 7.50% (0.07504) | 94.17th | v5 (v2026.06.15) |
| Aug 30, 2026 | 4.94% (0.04938) | 91.53th | v5 (v2026.06.15) |
| Aug 28, 2026 | 7.50% (0.07504) | 94.14th | v5 (v2026.06.15) |
| Aug 24, 2026 | 4.94% (0.04938) | 91.48th | v5 (v2026.06.15) |
| Aug 23, 2026 | 7.50% (0.07504) | 94.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.03% (0.05032) | 91.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.61% (0.02608) | 84.61th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.67% (0.00670) | 80.46th | v3 (v2023.03.01) |
| Jun 16, 2024 | 0.67% (0.00670) | 79.87th | v3 (v2023.03.01) |
| Feb 15, 2024 | 0.58% (0.00576) | 77.36th | v3 (v2023.03.01) |
| Jan 10, 2024 | 0.48% (0.00481) | 73.31th | v3 (v2023.03.01) |
| Dec 10, 2023 | 0.47% (0.00471) | 72.87th | v3 (v2023.03.01) |
| Mar 19, 2023 | 0.45% (0.00445) | 70.95th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.37% (0.00372) | 68.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.90% (0.03899) | 85.64th | v2 (v2022.01.01) |
| Oct 27, 2022 | 3.90% (0.03899) | 85.19th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.79% (0.03795) | 84.06th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.79% (0.03795) | 67.26th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.92% (0.03919) | 72.90th | v1 |
| Jan 6, 2022 | 3.92% (0.03919) | 72.66th | v1 |
| Sep 1, 2021 | 3.92% (0.03919) | 83.11th | v1 |
| Apr 14, 2021 | 3.92% (0.03919) | 0.00th | v1 |
Weaknesses (2)
References (11)
- http://www.securitytracker.com/id/1040831 vdb-entry
- https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
- https://access.redhat.com/security/cve/CVE-2017-17969 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1538457 Issue Tracking
- https://github.com/p7zip-project/p7zip/issues/7
- https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ ExploitTechnical DescriptionThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html mailing-listMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-17969
- https://usn.ubuntu.com/3913-1/ vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-17969
- https://www.debian.org/security/2018/dsa-4104 vendor-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1040831 | vdb-entry | |
| https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html | ||
| https://access.redhat.com/security/cve/CVE-2017-17969 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1538457 | Issue Tracking | |
| https://github.com/p7zip-project/p7zip/issues/7 | ||
| https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ | ExploitTechnical DescriptionThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html | mailing-listMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-17969 | ||
| https://usn.ubuntu.com/3913-1/ | vendor-advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-17969 | ||
| https://www.debian.org/security/2018/dsa-4104 | vendor-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 30, 2018
Updated Jan 10, 2025
Reserved Dec 29, 2017
Link CVE-2017-17969
CISA Vulnrichment
Updated n/a