CVE-2019-18222
published 2020-01-23CVE-2019-18222: The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the…
PriorityP418medium4.7CVSS 3.1
AVLACHPRLUINSUCHINAN
EPSS
0.33%
24.7th percentile
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| arm | mbed_crypto | < 3.0.0 | 3.0.0 |
| arm | mbed_tls | < 2.7.13 | 2.7.13 |
| arm | mbed_tls | >= 2.17.0 < 2.20.0 | 2.20.0 |
| arm | mbed_tls | >= 2.8.0 < 2.16.4 | 2.16.4 |
| debian | debian_linux | — | — |
| debian | mbedtls | < mbedtls 2.16.4-1 (bookworm) | mbedtls 2.16.4-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| mbed | mbedtls | >= 0 < 2.16.4-1 | 2.16.4-1 |
| mbed | mbedtls | >= 0 < 2.16.4-1 | 2.16.4-1 |
| mbed | mbedtls | >= 0 < 2.16.4-1 | 2.16.4-1 |
| mbed | mbedtls | >= 0 < 2.16.4-1 | 2.16.4-1 |
| 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
nvdv3.14.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.01.9LOWAV:L/AC:M/Au:N/C:P/I:N/A:N
osv4.7MEDIUM
vendor_debian4.7MEDIUM
vendor_msrc4.7MEDIUM
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GHSA
GHSA-fpgh-hvp5-cqc2: The ECDSA signature implementation in ecdsa
ghsa_unreviewed·2022-05-24
CVE-2019-18222 [MEDIUM] CWE-200 GHSA-fpgh-hvp5-cqc2: The ECDSA signature implementation in ecdsa
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
OSV
CVE-2019-18222: The ECDSA signature implementation in ecdsa
osv·2020-01-23·CVSS 4.7
CVE-2019-18222 [MEDIUM] CVE-2019-18222: The ECDSA signature implementation in ecdsa
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
Microsoft
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recov
vendor_msrc·2020-01-14·CVSS 4.7
CVE-2019-18222 [MEDIUM] CWE-203 The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recov
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
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 additiona
Debian
CVE-2019-18222: mbedtls - The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TL...
vendor_debian·2019·CVSS 4.7
CVE-2019-18222 [MEDIUM] CVE-2019-18222: mbedtls - The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TL...
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
Scope: local
bookworm: resolved (fixed in 2.16.4-1)
bullseye: resolved (fixed in 2.16.4-1)
forky: resolved (fixed in 2.16.4-1)
sid: resolved (fixed in 2.16.4-1)
trixie: resolved (fixed in 2.16.4-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3GWQNONS7GRORXZJ7MOJFUEJ2ZJ4OUW/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGDACU65MYZXXVPQP2EBHUJGOR4RWLVY/https://tls.mbed.org/tech-updates/security-advisorieshttps://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3GWQNONS7GRORXZJ7MOJFUEJ2ZJ4OUW/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGDACU65MYZXXVPQP2EBHUJGOR4RWLVY/https://tls.mbed.org/tech-updates/security-advisorieshttps://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12
2020-01-23
Published