UBUNTU-CVE-2017-1000100

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Source

https://ubuntu.com/security/notices/UBUNTU-CVE-2017-1000100

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-1000100.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-1000100

Related

Published

2017-10-04T00:00:00Z

Modified

2017-10-04T00:00:00Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator

Summary

[none]

Details

When doing a TFTP transfer and curl/libcurl is given a URL that contains a very long file name (longer than about 515 bytes), the file name is truncated to fit within the buffer boundaries, but the buffer size is still wrongly updated to use the untruncated length. This too large value is then used in the sendto() call, making curl attempt to send more data than what is actually put into the buffer. The endto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn't restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl's redirect protocols with --proto-redir and libcurl's with CURLOPTREDIRPROTOCOLS.

References

Affected packages

Ubuntu:14.04:LTS / curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.11?arch=src?distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

7.35.0-1ubuntu2.11

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

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "curl-udeb": "7.35.0-1ubuntu2.11",
            "libcurl3": "7.35.0-1ubuntu2.11",
            "libcurl4-gnutls-dev": "7.35.0-1ubuntu2.11",
            "libcurl3-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl3-nss": "7.35.0-1ubuntu2.11",
            "libcurl4-doc": "7.35.0-1ubuntu2.11",
            "libcurl3-udeb-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl3-gnutls-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl4-openssl-dev": "7.35.0-1ubuntu2.11",
            "libcurl4-openssl-dev-dbgsym": "7.35.0-1ubuntu2.11",
            "curl-dbgsym": "7.35.0-1ubuntu2.11",
            "curl": "7.35.0-1ubuntu2.11",
            "libcurl3-udeb": "7.35.0-1ubuntu2.11",
            "curl-udeb-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl4-nss-dev-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl3-gnutls": "7.35.0-1ubuntu2.11",
            "libcurl4-gnutls-dev-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl3-nss-dbgsym": "7.35.0-1ubuntu2.11",
            "libcurl3-dbg": "7.35.0-1ubuntu2.11",
            "libcurl4-nss-dev": "7.35.0-1ubuntu2.11"
        }
    ]
}

Ubuntu:16.04:LTS / curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.3?arch=src?distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

7.47.0-1ubuntu2.3

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

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "libcurl3": "7.47.0-1ubuntu2.3",
            "libcurl4-gnutls-dev": "7.47.0-1ubuntu2.3",
            "libcurl3-dbgsym": "7.47.0-1ubuntu2.3",
            "libcurl3-nss": "7.47.0-1ubuntu2.3",
            "libcurl4-doc": "7.47.0-1ubuntu2.3",
            "libcurl3-gnutls-dbgsym": "7.47.0-1ubuntu2.3",
            "libcurl4-openssl-dev": "7.47.0-1ubuntu2.3",
            "libcurl4-openssl-dev-dbgsym": "7.47.0-1ubuntu2.3",
            "curl-dbgsym": "7.47.0-1ubuntu2.3",
            "curl": "7.47.0-1ubuntu2.3",
            "libcurl4-nss-dev-dbgsym": "7.47.0-1ubuntu2.3",
            "libcurl3-gnutls": "7.47.0-1ubuntu2.3",
            "libcurl4-gnutls-dev-dbgsym": "7.47.0-1ubuntu2.3",
            "libcurl3-nss-dbgsym": "7.47.0-1ubuntu2.3",
            "libcurl3-dbg": "7.47.0-1ubuntu2.3",
            "libcurl4-nss-dev": "7.47.0-1ubuntu2.3"
        }
    ]
}