CVE-2021-33629
isula-build before 0.9.5-8 can cause a program crash, when building container images, some...
isula-build before 0.9.5-6 can cause a program crash, when building container images, some functions for processing external data do not remove spaces when processing data.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
isula-build before 0.9.5-6 can cause a program crash, when building container images, some functions for processing external data do not remove spaces when processing data.
- Record
CVE-2021-33629- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
isula-build before 0.9.5-6 can cause a program crash, when building container images, some functions for processing external data do not remove spaces when processing data.
- Record
CVE-2021-33629- Updated
- 2026-11-02
EUVDEUVD-2021-20306 No score
isula-build before 0.9.5-6 can cause a program crash, when building container images, some functions for processing external data do not remove spaces when processing data.
- Record
EUVD-2021-20306- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6pjx-x7mr-hmp3 No score
isula-build before 0.9.5-8 can cause a program crash, when building container images, some...
isula-build before 0.9.5-8 can cause a program crash, when building container images, some functions for processing external data do not remove spaces when processing data.
- Record
GHSA-6pjx-x7mr-hmp3- Updated
- 2026-11-02
OSVOESA-2021-1265
isula-build security update
isula-build is a tool used for container images building.
Security Fix(es):
When using isula-build to build container images, some functions for processing external data do not remove spaces when processing data. This vulnerability can cause a program crash. The open-source software isula-build fuzzing test shows that when multiple spaces are added to the end of 'RUN' will cause a isula-builder panic, for example, RUN echo "hello" <space><space>..(CVE-2021-33629)
- Record
OESA-2021-1265- CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
isula-buildopenEuler:20.03-LTS-SP1 |
before 0.9.5-6.oe1 | 0.9.5-6.oe1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33629 is a high vulnerability (CVSS 7.5) in Openeuler Isula-build, published July 17, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.96%, the 61st percentile. Fixed in isula-build 0.9.5-6.oe1.