Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before…
Priority MEDIUM 63CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 8 fixed, 3 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.
Summary
Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 allows remote attackers to have unspecified impact via a negative data size value, which triggers a heap-based buffer overflow.
Why it matters now
EPSS 0.2548 97th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 30
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:* | 3.0.1 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.1.0:*:*:*:*:*:*:* | 3.1.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:* | 3.1.1 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:* | 3.1.2 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:* | 3.1.3 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.1.4:*:*:*:*:*:*:* | 3.1.4 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.1.5:*:*:*:*:*:*:* | 3.1.5 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:* | 3.2.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:* | 3.2.1 | Vulnerable | python-pillow |
- cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.1.0:*:*:*:*:*:*:* Versions 3.1.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:* Versions 3.1.1 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:* Versions 3.1.2 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:* Versions 3.1.3 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.1.4:*:*:*:*:*:*:* Versions 3.1.4 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.1.5:*:*:*:*:*:*:* Versions 3.1.5 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:* Versions 3.2.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·python-pillow
Show 20 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:* | 3.2.2 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:* | 3.2.3 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:* | 3.2.4 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:* | 3.2.5 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.2.6:*:*:*:*:*:*:* | 3.2.6 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:* | 3.3.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:* | 3.3.1 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:* | 3.3.2 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.3:*:*:*:*:*:*:* | 3.3.3 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.4:*:*:*:*:*:*:* | 3.3.4 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.5:*:*:*:*:*:*:* | 3.3.5 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.3.6:*:*:*:*:*:*:* | 3.3.6 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.4.0:*:*:*:*:*:*:* | 3.4.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.4.1:*:*:*:*:*:*:* | 3.4.1 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.4.2:*:*:*:*:*:*:* | 3.4.2 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.4.3:*:*:*:*:*:*:* | 3.4.3 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.4.4:*:*:*:*:*:*:* | 3.4.4 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:*:*:*:*:*:*:*:* | up to 2.7.11 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.5.0:*:*:*:*:*:*:* | 3.5.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.5.1:*:*:*:*:*:*:* | 3.5.1 | Vulnerable | python-pillow |
- cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:* Versions 3.2.2 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:* Versions 3.2.3 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:* Versions 3.2.4 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:* Versions 3.2.5 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.2.6:*:*:*:*:*:*:* Versions 3.2.6 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:* Versions 3.3.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:* Versions 3.3.1 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:* Versions 3.3.2 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.3:*:*:*:*:*:*:* Versions 3.3.3 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.4:*:*:*:*:*:*:* Versions 3.3.4 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.5:*:*:*:*:*:*:* Versions 3.3.5 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.3.6:*:*:*:*:*:*:* Versions 3.3.6 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.4.0:*:*:*:*:*:*:* Versions 3.4.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.4.1:*:*:*:*:*:*:* Versions 3.4.1 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.4.2:*:*:*:*:*:*:* Versions 3.4.2 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.4.3:*:*:*:*:*:*:* Versions 3.4.3 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.4.4:*:*:*:*:*:*:* Versions 3.4.4 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions up to 2.7.11 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.5.0:*:*:*:*:*:*:* Versions 3.5.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.5.1:*:*:*:*:*:*:* Versions 3.5.1 Vulnerable ·python-pillow
Remediation
Red Hat 1 advisory
- RHSA-2016:2586 Released 2016-11-03 · Red Hat rating Lowpython security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) python-2.7.5-48.el7, python-libs-2.7.5-48.el7
- Red Hat Enterprise Linux Client Optional (v. 7) python-debug-2.7.5-48.el7, python-devel-2.7.5-48.el7, python-test-2.7.5-48.el7 +2
- Red Hat Enterprise Linux ComputeNode (v. 7) python-2.7.5-48.el7, python-devel-2.7.5-48.el7, python-libs-2.7.5-48.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-debug-2.7.5-48.el7, python-test-2.7.5-48.el7, python-tools-2.7.5-48.el7 +1
- Red Hat Enterprise Linux Server (v. 7) python-2.7.5-48.el7, python-devel-2.7.5-48.el7, python-libs-2.7.5-48.el7 +1
- Red Hat Enterprise Linux Server Optional (v. 7) python-debug-2.7.5-48.el7, python-test-2.7.5-48.el7, python-tools-2.7.5-48.el7 +1
- Red Hat Enterprise Linux Workstation (v. 7) python-2.7.5-48.el7, python-devel-2.7.5-48.el7, python-libs-2.7.5-48.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) python-debug-2.7.5-48.el7, python-test-2.7.5-48.el7, python-tools-2.7.5-48.el7 +1
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2016:2586 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2016:2586 |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2016-5636
- 2026-10-03 Alias added: GHSA-f5qq-9gj3-v9hw
References
Other 9
- http://www.splunk.com/view/SP-CAAAPUE
- [oss-security] 20160616 Re: CVE Request: heap overflow in Python zipimport module
- http://www.splunk.com/view/SP-CAAAPSV
- [debian-lts-announce] 20190207 [SECURITY] [DLA 1663-1] python3.4 security update
- https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS
- https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2
- [oss-security] 20160615 CVE Request: heap overflow in Python zipimport module
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Sources
- CVE-2016-5636 · CVE Program
- CVE-2016-5636 · NVD
- FIRST EPSS
- GHSA-f5qq-9gj3-v9hw · GitHub Advisory Database · CC BY 4.0
- CVE-2016-5636 · Red Hat security data · CC BY 4.0
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