CVE-2017-1000158
No exploitation reported by the sources we read.
- Published2017-11-17
- WeaknessCWE-190
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)
Timeline
dates in UTC- 2017-11-1705:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-1000158?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-1000158?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.0 | = 7.0 | no fix published | NVD |
| 8.0 | = 8.0 | no fix published | NVD |
| 9.0 | = 9.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.5 | ≥ 3.5.0, < 3.5.5 | 3.5.5 | NVD |
| 3.4 | ≥ 3.4.0, < 3.4.8 | 3.4.8 | NVD |
| 2.7 | < 2.7.15 | 2.7.15 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- bugs.python.orgPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2017-11-17
- Last Modified
- 2026-10-08
- NVD status
- Modified
Frequently asked questions
What is CVE-2017-1000158?
Is CVE-2017-1000158 actively exploited?
What is the CVSS score for CVE-2017-1000158?
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Same product first, then the same vendor advisory and the same publication week.