Vulnerability-Lookup

OPENSUSE-SU-2021:0384-1

Vulnerability from csaf_opensuse - Published: 2021-03-05 17:05 - Updated: 2026-09-20 19:22

Summary

Security update for mbedtls

Severity

Moderate

Notes

Title of the patch: Security update for mbedtls

Description of the patch: This update for mbedtls fixes the following issues: - mbedtls was updated to version 2.16.9 - CVE-2020-10932: Fixed side channel in ECC code that allowed an adversary with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave) to fully recover an ECDSA private key (boo#1181468).

Patchnames: openSUSE-2021-384

CVE-2020-10932

4.7 (Medium)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

Recommended 11 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 15.2:libmbedcrypto3-0:2.16.9-lp152.2.3.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedcrypto3-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedcrypto3-32bit-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedtls12-0:2.16.9-lp152.2.3.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedtls12-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedtls12-32bit-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedx509-0-0:2.16.9-lp152.2.3.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedx509-0-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libmbedx509-0-32bit-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:mbedtls-devel-0:2.16.9-lp152.2.3.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:mbedtls-devel-0:2.16.9-lp152.2.3.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://lists.opensuse.org/archives/list/security…	self
https://lists.opensuse.org/archives/list/security…	self
https://bugzilla.suse.com/1181468	self
https://www.suse.com/security/cve/CVE-2020-10932/	self
https://www.suse.com/security/cve/CVE-2020-10932	external
https://bugzilla.suse.com/1181468	external

JSON

To clipboard

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      "title": "CVE-2020-10932"
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}

CVE-2020-10932 (GCVE-0-2020-10932)

Vulnerability from cvelistv5 – Published: 2020-04-15 00:00 – Updated: 2024-08-04 11:21

Summary

An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2230 records in the last 180 days details

References

6 references

URL	Tags
https://tls.mbed.org/tech-updates/security-advisories
https://tls.mbed.org/tech-updates/security-adviso…
https://tls.mbed.org/tech-updates/releases/mbedtl…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2022…	mailing-list

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T11:21:12.970Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          {
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            "url": "https://tls.mbed.org/tech-updates/security-advisories"
          },
          {
            "tags": [
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            "url": "https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-04"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://tls.mbed.org/tech-updates/releases/mbedtls-2.16.6-and-2.7.15-released"
          },
          {
            "name": "FEDORA-2020-9a6e8e63e9",
            "tags": [
              "vendor-advisory",
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V/"
          },
          {
            "name": "FEDORA-2020-42564738a1",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNOS2IIBH5WNJXZUV546PY7666DE7Y3L/"
          },
          {
            "name": "[debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
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              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS."
        }
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      "problemTypes": [
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          "descriptions": [
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              "lang": "en",
              "type": "text"
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      "providerMetadata": {
        "dateUpdated": "2022-12-26T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      "references": [
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          "tags": [
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          "name": "[debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update",
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          "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"
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    "datePublished": "2020-04-15T00:00:00.000Z",
    "dateReserved": "2020-03-24T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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