6.3

CVE-2021-33634: Malicious image running containers may cause DoS attacks

Modified
Published 29-10-2023Last modified 09-09-2024

Vulnerability summary

CVE-2021-33634 is a medium (CVSS 6.3) Improper Initialization vulnerability in openeuler icr. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 29-10-2023
    PublishedVulnerability first disclosed.
  2. 09-09-2024
    Last modifiedVulnerability information updated.

Description

iSulad uses the lcr+lxc runtime (default) to run malicious images, which can cause DOS.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% 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: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Openeuler2 products
  • icr< 2.0.9-6 | ≥ 2.1.0, < 2.1.2-3
  • lcr≤ 2.0.9-6,2.1.2-3

1 vendor · 2 products

References

3 links