CVE-2021-44732
CRITICALCVSS 9.8/10EPSS 2.57%
Last modified
CVE-2021-44732 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure.. EPSS estimates a 2.57% chance of exploitation in the next 30 days.
Description
Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 2.16.12 |
| Arm | Mbed Tls | >= 2.17.0, < 2.28.0 |
| Trustedfirmware | Mbed Tls | 3.0.0 |
| Debian | Debian Linux | 10.0 |
References
- https://bugs.gentoo.org/829660Issue Tracking, Mailing List, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releasesRelease Notes
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12Exploit, Mitigation, Third Party Advisory
- https://bugs.gentoo.org/829660Issue Tracking, Mailing List, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releasesRelease Notes
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12Exploit, Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-44732?
Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure.
How severe is CVE-2021-44732?
CVE-2021-44732 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.57% probability of exploitation in the next 30 days.
How do I fix CVE-2021-44732?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-44732?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST