UBUNTU-CVE-2016-5420

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Source
https://ubuntu.com/security/CVE-2016-5420
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5420.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-5420
Upstream
Downstream
Related
Published
2016-08-03T00:00:00Z
Modified
2025-07-16T07:17:55.579595Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

curl and libcurl before 7.50.1 do not check the client certificate when choosing the TLS connection to reuse, which might allow remote attackers to hijack the authentication of the connection by leveraging a previously created connection with a different client certificate.

References

Affected packages

Ubuntu:14.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.8?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.35.0-1ubuntu2.8

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "curl",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "curl-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "curl-udeb",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "curl-udeb-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-dbg",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-gnutls-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-nss-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-udeb",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl3-udeb-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-doc",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-gnutls-dev-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-nss-dev-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.35.0-1ubuntu2.8"
        },
        {
            "binary_name": "libcurl4-openssl-dev-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.8"
        }
    ]
}

Ubuntu:16.04:LTS / curl

Package

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

Affected ranges

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

Affected versions

7.*

7.43.0-1ubuntu2
7.45.0-1ubuntu1
7.46.0-1ubuntu1
7.47.0-1ubuntu1
7.47.0-1ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "curl-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3-dbg",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3-gnutls-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl3-nss-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-doc",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-gnutls-dev-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-nss-dev-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.47.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcurl4-openssl-dev-dbgsym",
            "binary_version": "7.47.0-1ubuntu2.1"
        }
    ]
}