7.5

CVE-2018-14647: canonical ubuntu_linux

Modified
AliasesALPINE-CVE-2018-14647SUSE-SU-2018:3156-1UBUNTU-CVE-2018-14647
Published 25-09-2018Last modified 07-10-2026

Vulnerability summary

CVE-2018-14647 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 10.91% chance of exploitation in the next 30 days, higher than 95.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
10.91%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 12
DLA-1834-1DLA-1835-1DSA-4306-1DSA-4307-1MGASA-2018-0495MGASA-2019-0135

Timeline

  1. 25-09-2018
    PublishedVulnerability first disclosed.
  2. 07-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

8 scores · 5 sources · 3 versions

EPSS trend

Probability

10.91%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

No change 0.00 pp

From 10.91% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse9 products
  • python-base&distro=SUSE Linux Enterprise Server 11 SP4< 2.6.9-40.21.1
  • python-base&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 2.6.9-40.21.1
  • python-base&distro=SUSE Linux Enterprise Software Development Kit 11 SP4< 2.6.9-40.21.1
  • python-doc&distro=SUSE Linux Enterprise Server 11 SP4< 2.6-8.40.21.1
  • python-doc&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 2.6-8.40.21.1
Ubuntu5 products
  • python2.7< 2.7.6-8ubuntu0.5 | < 2.7.12-1ubuntu0~16.04.4 | < 2.7.15~rc1-1ubuntu0.1
  • python3.4< 3.4.3-1ubuntu1~14.04.7
  • python3.5< 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1 | < 3.5.2-2ubuntu0~16.04.5
  • python3.6< 3.6.7-1~18.04
  • python3.7< 3.7.1-1~18.04
Alpine3 products
  • python2< 2.7.16-r0 | < 2.7.15-r2
  • python2-tkinter< 2.7.16-r0
  • python3< 3.6.8-r0
Redhat3 products
Debian2 products
Canonical1 product
Fedoraproject1 product
Opensuse1 product
Python1 product
  • pythonEOL≥ 2.7.0, ≤ 2.7.15 | ≥ 3.4.0, ≤ 3.4.9 | ≥ 3.5.0, ≤ 3.5.6 | ≥ 3.6.0, ≤ 3.6.6 | 3.7.0
The python project1 product
  • python3.8, 3.7, 3.6, 3.5, 3.4, 2.7

10 vendors · 27 products

References

26 links
Show all 26 references