CVE-2021-44732: Double Free
First published: Mon Dec 20 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ARM mbed TLS | <2.16.12 | |
| ARM mbed TLS | >=2.17.0<2.28.0 | |
| ARM mbed TLS | =3.0.0 | |
| ARM mbed TLS | =3.0.0-preview1 | |
| Debian Debian Linux | =10.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugs.gentoo.org/829660
- https://github.com/ARMmbed/mbedtls/releases
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2021-44732.
What is the severity of CVE-2021-44732?
The severity of CVE-2021-44732 is critical, with a severity value of 9.8.
What software is affected by CVE-2021-44732?
ARM mbed TLS versions up to 2.16.12, versions from 2.17.0 to 2.28.0, ARM mbed TLS version 3.0.0, ARM mbed TLS version 3.0.0-preview1, and Debian Debian Linux version 10.0 are affected by CVE-2021-44732.
What is the impact of CVE-2021-44732?
CVE-2021-44732 can lead to a double free vulnerability in certain out-of-memory conditions, which can be exploited by an attacker to potentially execute arbitrary code or cause a denial of service.
How can I fix CVE-2021-44732?
To fix CVE-2021-44732, update to Mbed TLS version 3.0.1 or later, or the patched version provided by your software vendor.
- collector/nvd-index
- agent/references
- agent/severity
- agent/weakness
- agent/author
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/arm
- canonical/arm mbed tls
- version/arm mbed tls/2.17.0
- version/arm mbed tls/3.0.0
- version/arm mbed tls/3.0.0-preview1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0