UBUNTU-CVE-2021-22925

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Source
https://ubuntu.com/security/CVE-2021-22925
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22925.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-22925
Upstream
Downstream
Related
Published
2021-07-21T00:00:00Z
Modified
2025-10-14T16:50:39Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

curl supports the -t command line option, known as CURLOPT_TELNETOPTIONSin libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending NEW_ENV variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

References

Affected packages

Ubuntu:Pro:14.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20+esm14?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+esm14

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
7.35.0-1ubuntu2.20+esm8
7.35.0-1ubuntu2.20+esm9
7.35.0-1ubuntu2.20+esm10
7.35.0-1ubuntu2.20+esm11
7.35.0-1ubuntu2.20+esm12
7.35.0-1ubuntu2.20+esm13

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "libcurl3"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm14",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.19+esm3?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+esm3

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
7.47.0-1ubuntu2.19+esm1
7.47.0-1ubuntu2.19+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "libcurl3"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm3",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:18.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.14?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.58.0-2ubuntu3.14

Affected versions

7.*

7.55.1-1ubuntu2
7.55.1-1ubuntu2.1
7.57.0-1ubuntu1
7.58.0-2ubuntu1
7.58.0-2ubuntu2
7.58.0-2ubuntu3
7.58.0-2ubuntu3.1
7.58.0-2ubuntu3.2
7.58.0-2ubuntu3.3
7.58.0-2ubuntu3.5
7.58.0-2ubuntu3.6
7.58.0-2ubuntu3.7
7.58.0-2ubuntu3.8
7.58.0-2ubuntu3.9
7.58.0-2ubuntu3.10
7.58.0-2ubuntu3.12
7.58.0-2ubuntu3.13

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "libcurl4"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.14",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.68.0-1ubuntu2.6?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.68.0-1ubuntu2.6

Affected versions

7.*

7.65.3-1ubuntu3
7.65.3-1ubuntu4
7.66.0-1ubuntu1
7.67.0-2ubuntu1
7.68.0-1ubuntu1
7.68.0-1ubuntu2
7.68.0-1ubuntu2.1
7.68.0-1ubuntu2.2
7.68.0-1ubuntu2.4
7.68.0-1ubuntu2.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "libcurl4"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.6",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "No subscription required"
}