MEDIUM
zziplib: invalid memory read in zzip_mem_entry_extra_block (memdisk.c)
Published Mar 1, 2017
5.5
MEDIUMCVSS 3.0
EPSS 1.73%
Description
The zzip_mem_entry_extra_block function in memdisk.c in zziplib 0.13.62 allows remote attackers to cause a denial of service (invalid memory read and crash) via a crafted ZIP file.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
3.7 LOW Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.73% 0.01727
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01727
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.73% (0.01727) | 76.72th | v5 (v2026.06.15) |
| Aug 23, 2026 | 2.72% (0.02716) | 84.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.71% (0.01712) | 74.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.49% (0.00487) | 63.36th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.27% (0.00273) | 67.54th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00316) | 69.55th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.32% (0.00316) | 66.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.23% (0.00226) | 59.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.30% (0.01300) | 31.12th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.30% (0.01300) | 0.00th | v1 |
Weaknesses (1)
References (8)
- http://blogs.gentoo.org/ago/2017/02/09/zziplib-invalid-memory-read-in-zzip_mem_entry_extra_block-memdisk-c/
- http://www.openwall.com/lists/oss-security/2017/02/14/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/96268 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2017-5977 Vendor Advisory
- https://blogs.gentoo.org/ago/2017/02/09/zziplib-invalid-memory-read-in-zzip_mem_entry_extra_block-memdisk-c/ x_refsource_MISCExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1422512 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-5977
- https://www.cve.org/CVERecord?id=CVE-2017-5977
| Link | Providers | Tags |
|---|---|---|
| http://blogs.gentoo.org/ago/2017/02/09/zziplib-invalid-memory-read-in-zzip_mem_entry_extra_block-memdisk-c/ | ||
| http://www.openwall.com/lists/oss-security/2017/02/14/3 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/96268 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2017-5977 | Vendor Advisory | |
| https://blogs.gentoo.org/ago/2017/02/09/zziplib-invalid-memory-read-in-zzip_mem_entry_extra_block-memdisk-c/ | x_refsource_MISCExploitThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1422512 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-5977 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-5977 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 1, 2017
Updated Aug 5, 2024
Reserved Feb 13, 2017
Link CVE-2017-5977
CISA Vulnrichment
Updated n/a