CVE-2018-14647
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 25, 2018
- Updated
- Oct 7, 2026
- Reserved
- Jul 27, 2018
Description
Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 5.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
PythonThe Python Project |
|
References
- DSA-4306vendor-advisory
- USN-3817-2vendor-advisory
- 1041740vdb-entry
- 105396vdb-entry
- DSA-4307vendor-advisory
- https://bugs.python.org/issue34623
- USN-3817-1vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14647
- FEDORA-2019-0c91ce7b3cvendor-advisory
- RHSA-2019:1260vendor-advisory
- [debian-lts-announce] 20190625 [SECURITY] [DLA 1834-1] python2.7 security updatemailing-list
- [debian-lts-announce] 20190625 [SECURITY] [DLA 1835-1] python3.4 security updatemailing-list
- RHSA-2019:2030vendor-advisory
- RHSA-2019:3725vendor-advisory
- openSUSE-SU-2020:0086vendor-advisory
- [bookkeeper-issues] 20200729 [GitHub] [bookkeeper] padma81 opened a new issue #2387: Security vulnerabilities in the apache/bookkeeper-4.9.2 imagemailing-list
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.