CVE-2021-33632
CVE-2021-33632 is a high-severity vulnerability with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.
Key facts
- Severity: High (CVSS 3.x base score 7.0)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2021-20309
- Weakness: CWE-367
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-33632?
- 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.
- How severe is CVE-2021-33632?
- CVE-2021-33632 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-33632 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2021-33632?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2021-33632 have an EU (EUVD) identifier?
- Yes. CVE-2021-33632 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-20309.
- When was CVE-2021-33632 published?
- CVE-2021-33632 was published on 2024-03-25 and last updated on 2026-06-17.
References
- https://gitee.com/src-openeuler/iSulad/pulls/639
- https://gitee.com/src-openeuler/iSulad/pulls/640
- https://gitee.com/src-openeuler/iSulad/pulls/645
- 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-2024-1289
- 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-2024-1307
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