USN-5079-2

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Source
https://ubuntu.com/security/notices/USN-5079-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5079-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5079-2
Upstream
Related
Published
2021-09-15T12:34:55.372531Z
Modified
2025-10-14T16:38:21Z
Summary
curl vulnerabilities
Details

USN-5079-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Patrick Monnerat discovered that curl incorrectly handled upgrades to TLS. When receiving certain responses from servers, curl would continue without TLS even when the option to require a successful upgrade to TLS was specified. (CVE-2021-22946)

Patrick Monnerat discovered that curl incorrectly handled responses received before STARTTLS. A remote attacker could possibly use this issue to inject responses and intercept communications. (CVE-2021-22947)

References

Affected packages

Ubuntu:Pro:14.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20+esm8?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.35.0-1ubuntu2.20+esm8

Affected versions

7.*

7.32.0-1ubuntu1
7.33.0-1ubuntu1
7.34.0-1ubuntu1
7.35.0-1ubuntu1
7.35.0-1ubuntu2
7.35.0-1ubuntu2.1
7.35.0-1ubuntu2.2
7.35.0-1ubuntu2.3
7.35.0-1ubuntu2.5
7.35.0-1ubuntu2.6
7.35.0-1ubuntu2.7
7.35.0-1ubuntu2.8
7.35.0-1ubuntu2.9
7.35.0-1ubuntu2.10
7.35.0-1ubuntu2.11
7.35.0-1ubuntu2.12
7.35.0-1ubuntu2.13
7.35.0-1ubuntu2.14
7.35.0-1ubuntu2.15
7.35.0-1ubuntu2.16
7.35.0-1ubuntu2.17
7.35.0-1ubuntu2.19
7.35.0-1ubuntu2.20
7.35.0-1ubuntu2.20+esm2
7.35.0-1ubuntu2.20+esm3
7.35.0-1ubuntu2.20+esm4
7.35.0-1ubuntu2.20+esm5
7.35.0-1ubuntu2.20+esm6
7.35.0-1ubuntu2.20+esm7

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "curl",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        },
        {
            "binary_name": "libcurl3",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        },
        {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        },
        {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        },
        {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        },
        {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        },
        {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.35.0-1ubuntu2.20+esm8"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-22946"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-22947"
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}

Ubuntu:Pro:16.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.19+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.47.0-1ubuntu2.19+esm1

Affected versions

7.*

7.43.0-1ubuntu2
7.45.0-1ubuntu1
7.46.0-1ubuntu1
7.47.0-1ubuntu1
7.47.0-1ubuntu2
7.47.0-1ubuntu2.1
7.47.0-1ubuntu2.2
7.47.0-1ubuntu2.3
7.47.0-1ubuntu2.4
7.47.0-1ubuntu2.5
7.47.0-1ubuntu2.6
7.47.0-1ubuntu2.7
7.47.0-1ubuntu2.8
7.47.0-1ubuntu2.9
7.47.0-1ubuntu2.11
7.47.0-1ubuntu2.12
7.47.0-1ubuntu2.13
7.47.0-1ubuntu2.14
7.47.0-1ubuntu2.15
7.47.0-1ubuntu2.16
7.47.0-1ubuntu2.18
7.47.0-1ubuntu2.19

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        },
        {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        },
        {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        },
        {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        },
        {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        },
        {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        },
        {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.47.0-1ubuntu2.19+esm1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-22946"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-22947"
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}