UBUNTU-CVE-2023-38545

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2023-38545
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-38545.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-38545
Related
Published
2023-10-11T06:00:00Z
Modified
2023-10-11T06:00:00Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due to this bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target buffer instead of copying just the resolved address there. The target buffer being a heap based buffer, and the host name coming from the URL that curl has been told to operate with.

References

Affected packages

Ubuntu:20.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.68.0-1ubuntu2.19?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.68.0-1ubuntu2.19

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
7.68.0-1ubuntu2.18

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "curl-dbgsym": "7.68.0-1ubuntu2.19",
            "curl": "7.68.0-1ubuntu2.19",
            "libcurl4": "7.68.0-1ubuntu2.19",
            "libcurl4-gnutls-dev": "7.68.0-1ubuntu2.19",
            "libcurl4-dbgsym": "7.68.0-1ubuntu2.19",
            "libcurl3-nss": "7.68.0-1ubuntu2.19",
            "libcurl4-doc": "7.68.0-1ubuntu2.19",
            "libcurl3-nss-dbgsym": "7.68.0-1ubuntu2.19",
            "libcurl3-gnutls": "7.68.0-1ubuntu2.19",
            "libcurl3-gnutls-dbgsym": "7.68.0-1ubuntu2.19",
            "libcurl4-openssl-dev": "7.68.0-1ubuntu2.19",
            "libcurl4-nss-dev": "7.68.0-1ubuntu2.19"
        }
    ],
    "priority_reason": "Upstream curl developer has rated this issue as high"
}

Ubuntu:22.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@7.81.0-1ubuntu1.14?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.81.0-1ubuntu1.14

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
7.81.0-1ubuntu1.10
7.81.0-1ubuntu1.11
7.81.0-1ubuntu1.13

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "curl-dbgsym": "7.81.0-1ubuntu1.14",
            "curl": "7.81.0-1ubuntu1.14",
            "libcurl4": "7.81.0-1ubuntu1.14",
            "libcurl4-gnutls-dev": "7.81.0-1ubuntu1.14",
            "libcurl4-dbgsym": "7.81.0-1ubuntu1.14",
            "libcurl3-nss": "7.81.0-1ubuntu1.14",
            "libcurl4-doc": "7.81.0-1ubuntu1.14",
            "libcurl3-nss-dbgsym": "7.81.0-1ubuntu1.14",
            "libcurl3-gnutls": "7.81.0-1ubuntu1.14",
            "libcurl3-gnutls-dbgsym": "7.81.0-1ubuntu1.14",
            "libcurl4-openssl-dev": "7.81.0-1ubuntu1.14",
            "libcurl4-nss-dev": "7.81.0-1ubuntu1.14"
        }
    ],
    "priority_reason": "Upstream curl developer has rated this issue as high"
}

Ubuntu:24.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl@8.2.1-1ubuntu3.1?arch=src?distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.2.1-1ubuntu3.1

Affected versions

8.*

8.2.1-1ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "curl-dbgsym": "8.2.1-1ubuntu3.1",
            "curl": "8.2.1-1ubuntu3.1",
            "libcurl4": "8.2.1-1ubuntu3.1",
            "libcurl4-gnutls-dev": "8.2.1-1ubuntu3.1",
            "libcurl4-dbgsym": "8.2.1-1ubuntu3.1",
            "libcurl3-nss": "8.2.1-1ubuntu3.1",
            "libcurl4-doc": "8.2.1-1ubuntu3.1",
            "libcurl3-nss-dbgsym": "8.2.1-1ubuntu3.1",
            "libcurl3-gnutls": "8.2.1-1ubuntu3.1",
            "libcurl3-gnutls-dbgsym": "8.2.1-1ubuntu3.1",
            "libcurl4-openssl-dev": "8.2.1-1ubuntu3.1",
            "libcurl4-nss-dev": "8.2.1-1ubuntu3.1"
        }
    ],
    "priority_reason": "Upstream curl developer has rated this issue as high"
}