CVE-2021-43666
published 2022-03-24CVE-2021-43666: A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.21%
80.4th percentile
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| arm | mbed_tls | <= 3.0.0 | — |
| debian | debian_linux | — | — |
| debian | mbedtls | < mbedtls 2.28.0-1 (bookworm) | mbedtls 2.28.0-1 (bookworm) |
| mbed | mbedtls | >= 0 < 2.16.9-0.1+deb11u1 | 2.16.9-0.1+deb11u1 |
| mbed | mbedtls | >= 0 < 2.28.0-1 | 2.28.0-1 |
| mbed | mbedtls | >= 0 < 2.28.0-1 | 2.28.0-1 |
| mbed | mbedtls | >= 0 < 2.28.0-1 | 2.28.0-1 |
| msrc | azl3_qemu_8.2.0-16_on_azure_linux_3.0 | — | — |
| msrc | cbl2_qemu_6.2.0-24_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
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CISA ICS
Siemens SCALANCE XCM-/XRM-300
cisa_ics·2024-02-15
Siemens SCALANCE XCM-/XRM-300
ICS Advisory
##
Siemens SCALANCE XCM-/XRM-300
Release DateFebruary 15, 2024
Alert CodeICSA-24-046-11
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SCALANCE XCM-/XRM-300
- Vulnerabilities: Out-of-bounds Write, Incorrect Type Conversion or Cast, Improper Verification of Cryptographic Signature, Improper Access Control, Improper Authentication, Missing Encryption
Microsoft
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
vendor_msrc·2022-03-08·CVSS 7.5
CVE-2021-43666 [HIGH] A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
mitre: mi
Debian
CVE-2021-43666: mbedtls - A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mb...
vendor_debian·2021·CVSS 7.5
CVE-2021-43666 [HIGH] CVE-2021-43666: mbedtls - A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mb...
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
Scope: local
bookworm: resolved (fixed in 2.28.0-1)
bullseye: resolved (fixed in 2.16.9-0.1+deb11u1)
forky: resolved (fixed in 2.28.0-1)
sid: resolved (fixed in 2.28.0-1)
trixie: resolved (fixed in 2.28.0-1)
GHSA
GHSA-cgwh-hfr7-38m2: A Denial of Service vulnerability exists in mbed TLS 3
ghsa_unreviewed·2022-03-25
CVE-2021-43666 [HIGH] CWE-130 GHSA-cgwh-hfr7-38m2: A Denial of Service vulnerability exists in mbed TLS 3
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
OSV
CVE-2021-43666: A Denial of Service vulnerability exists in mbed TLS 3
osv·2022-03-24·CVSS 7.5
CVE-2021-43666 [HIGH] CVE-2021-43666: A Denial of Service vulnerability exists in mbed TLS 3
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2022-03-24
Published