CVE-2020-36475

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Source
https://cve.org/CVERecord?id=CVE-2020-36475
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36475.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-36475
Downstream
Published
2021-08-23T02:15:06Z
Modified
2026-10-22T02:48:23Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "9.0"
                        },
                        {
                            "last_affected":  "9.0"
                        },
                        {
                            "introduced":  "10.0"
                        },
                        {
                            "last_affected":  "10.0"
                        }
                    ],
                    "source":  "CPE_STRING"
                }
            ],
            "vendor_product":  "debian:debian_linux"
        }
    ]
}
References

Affected packages

Git / github.com/Mbed-TLS/mbedtls

Affected ranges

Type
GIT
Repo
https://github.com/Mbed-TLS/mbedtls
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
78d9663acec4ac72af43e2db57fc73a24e856108
Fixed
8254ed2a9fadede8c6bf414072f78fc78d5af61c
Introduced
8be0e6db41b4a085e90cb03983f99d3a5158d450
Fixed
3fac0bae4a50113989b3d015cd2d948f51a6d9ac
Introduced
3f8d78411a26e833db18d9fbde0e2f0baeda87f0
Fixed
1c54b5410fd48d6bcada97e30cac417c5c7eea67
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.7.18"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:o:siemens:logo\\!_cmr2020_firmware:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:o:siemens:logo\\!_cmr2040_firmware:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "2.8.0"
                },
                {
                    "fixed":  "2.16.9"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "2.17.0"
                },
                {
                    "fixed":  "2.25.0"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Affected versions

Other
beta-oob-2
mbedos-techcon-oob2
mbedtls-2.*
mbedtls-2.0.0
mbedtls-2.1.0
mbedtls-2.1.1
mbedtls-2.1.2
mbedtls-2.10.0
mbedtls-2.11.0
mbedtls-2.12.0
mbedtls-2.13.0
mbedtls-2.13.1
mbedtls-2.14.0
mbedtls-2.16.0
mbedtls-2.16.2
mbedtls-2.16.3
mbedtls-2.16.4
mbedtls-2.16.5
mbedtls-2.16.6
mbedtls-2.16.8
mbedtls-2.19.0
mbedtls-2.19.0d1
mbedtls-2.19.0d2
mbedtls-2.19.1
mbedtls-2.20.0
mbedtls-2.20.0d0
mbedtls-2.21.0
mbedtls-2.22.0d0
mbedtls-2.24.0
mbedtls-2.8.0
mbedtls-2.9.0
polarssl-1.*
polarssl-1.2.0
polarssl-1.2.1
polarssl-1.2.2
polarssl-1.2.4
polarssl-1.2.5
polarssl-1.2.6
polarssl-1.3.0
polarssl-1.3.0-rc0
polarssl-1.3.1
polarssl-1.3.2
polarssl-1.3.3
polarssl-1.3.4
polarssl-1.3.5
polarssl-1.3.6
polarssl-1.3.7
polarssl-1.3.8
polarssl-1.3.9
v2.*
v2.16.8
v2.24.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36475.json"

Git / github.com/mbed-tls/mbedtls

Affected ranges

Type
GIT
Repo
https://github.com/mbed-tls/mbedtls
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3fac0bae4a50113989b3d015cd2d948f51a6d9ac
Fixed
1c54b5410fd48d6bcada97e30cac417c5c7eea67
Fixed
78d9663acec4ac72af43e2db57fc73a24e856108
Database specific
Show details 
{
    "extracted_events":  [
        {
            "original_tag":  "v2.16.9",
            "range":  [
                {
                    "fixed":  "3fac0bae4a50113989b3d015cd2d948f51a6d9ac"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "v2.25.0",
            "range":  [
                {
                    "fixed":  "1c54b5410fd48d6bcada97e30cac417c5c7eea67"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "v2.7.18",
            "range":  [
                {
                    "fixed":  "78d9663acec4ac72af43e2db57fc73a24e856108"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

Other
beta-oob-2
mbedos-release-15-11
mbedos-techcon-oob2
mbedtls-2.*
mbedtls-2.0.0
mbedtls-2.1.0
mbedtls-2.1.1
mbedtls-2.1.2
mbedtls-2.10.0
mbedtls-2.11.0
mbedtls-2.12.0
mbedtls-2.13.0
mbedtls-2.13.1
mbedtls-2.14.0
mbedtls-2.16.0
mbedtls-2.16.2
mbedtls-2.16.3
mbedtls-2.16.4
mbedtls-2.16.5
mbedtls-2.16.6
mbedtls-2.16.8
mbedtls-2.19.0
mbedtls-2.19.0d1
mbedtls-2.19.0d2
mbedtls-2.19.1
mbedtls-2.2.0
mbedtls-2.2.1
mbedtls-2.20.0
mbedtls-2.20.0d0
mbedtls-2.21.0
mbedtls-2.22.0d0
mbedtls-2.24.0
mbedtls-2.3.0
mbedtls-2.4.0
mbedtls-2.5.0
mbedtls-2.5.1
mbedtls-2.6.0
mbedtls-2.6.0-rc1
mbedtls-2.7.0
mbedtls-2.7.0-rc1
mbedtls-2.7.1
mbedtls-2.7.11
mbedtls-2.7.12
mbedtls-2.7.13
mbedtls-2.7.14
mbedtls-2.7.15
mbedtls-2.7.17
mbedtls-2.7.2
mbedtls-2.7.2-rc1
mbedtls-2.7.3
mbedtls-2.7.4
mbedtls-2.7.5
mbedtls-2.7.6
mbedtls-2.7.7
mbedtls-2.7.8
mbedtls-2.7.9
mbedtls-2.8.0
mbedtls-2.8.0-rc1
mbedtls-2.9.0
polarssl-1.*
polarssl-1.2.0
polarssl-1.2.1
polarssl-1.2.2
polarssl-1.2.4
polarssl-1.2.5
polarssl-1.2.6
polarssl-1.3.0
polarssl-1.3.0-rc0
polarssl-1.3.1
polarssl-1.3.2
polarssl-1.3.3
polarssl-1.3.4
polarssl-1.3.5
polarssl-1.3.6
polarssl-1.3.7
polarssl-1.3.8
polarssl-1.3.9
v2.*
v2.16.8
v2.24.0
v2.7.17
yotta-2.*
yotta-2.3.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36475.json"