UBUNTU-CVE-2023-27535

See a problem?
Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2023-27535

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-27535.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-27535

Upstream

CVE-2023-27535

Downstream

USN-5964-1

USN-5964-2

Related

Published

2023-03-20T00:00:00Z

Modified

2025-10-14T17:03:15Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPTFTPACCOUNT, CURLOPTFTPALTERNATIVETOUSER, CURLOPTFTPSSLCCC, and CURLOPTUSE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

References

Affected packages

Ubuntu:Pro:14.04:LTS / curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20+esm15?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+esm15

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

7.35.0-1ubuntu2.20+esm14

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "binary_name": "libcurl3"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.35.0-1ubuntu2.20+esm15",
            "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+esm8?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+esm8

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

7.47.0-1ubuntu2.19+esm3

7.47.0-1ubuntu2.19+esm4

7.47.0-1ubuntu2.19+esm5

7.47.0-1ubuntu2.19+esm6

7.47.0-1ubuntu2.19+esm7

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "binary_name": "libcurl3"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.19+esm8",
            "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@7.58.0-2ubuntu3.24?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

7.58.0-2ubuntu3.24

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

7.58.0-2ubuntu3.14

7.58.0-2ubuntu3.15

7.58.0-2ubuntu3.16

7.58.0-2ubuntu3.17

7.58.0-2ubuntu3.18

7.58.0-2ubuntu3.19

7.58.0-2ubuntu3.20

7.58.0-2ubuntu3.21

7.58.0-2ubuntu3.22

7.58.0-2ubuntu3.23

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "libcurl4"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.58.0-2ubuntu3.24",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl@7.68.0-1ubuntu2.18?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

7.68.0-1ubuntu2.18

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

7.68.0-1ubuntu2.6

7.68.0-1ubuntu2.7

7.68.0-1ubuntu2.10

7.68.0-1ubuntu2.11

7.68.0-1ubuntu2.12

7.68.0-1ubuntu2.13

7.68.0-1ubuntu2.14

7.68.0-1ubuntu2.15

7.68.0-1ubuntu2.16

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "libcurl4"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.68.0-1ubuntu2.18",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl@7.81.0-1ubuntu1.10?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

7.81.0-1ubuntu1.10

Affected versions

7.*

7.74.0-1.3ubuntu2

7.74.0-1.3ubuntu3

7.80.0-3

7.81.0-1

7.81.0-1ubuntu1.1

7.81.0-1ubuntu1.2

7.81.0-1ubuntu1.3

7.81.0-1ubuntu1.4

7.81.0-1ubuntu1.6

7.81.0-1ubuntu1.7

7.81.0-1ubuntu1.8

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "libcurl4"
        },
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.81.0-1ubuntu1.10",
            "binary_name": "libcurl4-openssl-dev"
        }
    ],
    "availability": "No subscription required"
}