UBUNTU-CVE-2021-22945

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Source
https://ubuntu.com/security/CVE-2021-22945
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22945.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-22945
Upstream
Downstream
Related
Published
2021-09-15T00:00:00Z
Modified
2025-07-16T07:55:02.057989Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it again.

References

Affected packages

Ubuntu:Pro:14.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20+esm7?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+esm7

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+esm3
7.35.0-1ubuntu2.20+esm4
7.35.0-1ubuntu2.20+esm5
7.35.0-1ubuntu2.20+esm6

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "curl",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "curl-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "curl-udeb",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "curl-udeb-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-dbg",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-gnutls-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-nss-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-udeb",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl3-udeb-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-doc",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-gnutls-dev-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-nss-dev-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        },
        {
            "binary_name": "libcurl4-openssl-dev-dbgsym",
            "binary_version": "7.35.0-1ubuntu2.20+esm7"
        }
    ]
}

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 

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

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 

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

Ubuntu:22.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.74.0-1.3ubuntu2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.74.0-1.3ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "curl",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "curl-dbgsym",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl3-gnutls-dbgsym",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl3-nss-dbgsym",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl4",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl4-dbgsym",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl4-doc",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.74.0-1.3ubuntu2"
        },
        {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.74.0-1.3ubuntu2"
        }
    ]
}