Integer overflow in Smihica Pyminizip
CVE-2023-45853
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/madler/zlib/pull/843 (Patch, Issue Tracking)
- www.winimage.com/zLibDll/minizip.html (Product)
- github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/RE… (Product)
- chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b… (Patch, Mailing List)
- chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c5488133… (Patch, Mailing List)
- www.openwall.com/lists/oss-security/2023/10/20/9 (mailing-list, Mailing List)
- lists.debian.org/debian-lts-announce/2023/11/msg00026.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20231130-0009/ (Third Party Advisory)
- pypi.org/project/pyminizip/ (Release Notes)
- security.gentoo.org/glsa/202401-18 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-45853?
- CVE-2023-45853 is a critical-severity vulnerability in Smihica Pyminizip, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2023-10-14.
- How severe is CVE-2023-45853?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-45853 known to be exploited?
- 60 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.