UBUNTU-CVE-2018-1000005

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Source
https://ubuntu.com/security/CVE-2018-1000005
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000005.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-1000005
Related
Published
2018-01-24T00:00:00Z
Modified
2018-01-24T00:00:00Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
Summary
[none]
Details

libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like : to the target buffer, while this was recently changed to : (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something.

References

Affected packages

Ubuntu:16.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.47.0-1ubuntu2.6

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "curl"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "curl-dbgsym"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3-dbg"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3-dbgsym"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3-gnutls"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3-gnutls-dbgsym"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3-nss"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl3-nss-dbgsym"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-doc"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-gnutls-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-gnutls-dev-dbgsym"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-nss-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-nss-dev-dbgsym"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-openssl-dev"
        },
        {
            "binary_version": "7.47.0-1ubuntu2.6",
            "binary_name": "libcurl4-openssl-dev-dbgsym"
        }
    ]
}