UBUNTU-CVE-2017-3737

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Source

https://ubuntu.com/security/notices/UBUNTU-CVE-2017-3737

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3737.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-3737

Related

Published

2017-12-07T00:00:00Z

Modified

2017-12-07T00:00:00Z

Severity

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

Summary

[none]

Details

OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the explicit handshake functions (SSLdohandshake(), SSLaccept() and SSLconnect()), however due to a bug it does not work correctly if SSLread() or SSLwrite() is called directly. In that scenario, if the handshake fails then a fatal error will be returned in the initial function call. If SSLread()/SSLwrite() is subsequently called by the application for the same SSL object then it will succeed and the data is passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSLread()/SSLwrite() being issued after having already received a fatal error. OpenSSL version 1.0.2b-1.0.2m are affected. Fixed in OpenSSL 1.0.2n. OpenSSL 1.1.0 is not affected.

References

Affected packages

Ubuntu:16.04:LTS / openssl

Package

Name: openssl
Purl: pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.10?arch=src?distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.0.2g-1ubuntu4.10

Affected versions

1.*

1.0.2d-0ubuntu1

1.0.2d-0ubuntu2

1.0.2e-1ubuntu1

1.0.2f-2ubuntu1

1.0.2g-1ubuntu2

1.0.2g-1ubuntu3

1.0.2g-1ubuntu4

1.0.2g-1ubuntu4.1

1.0.2g-1ubuntu4.2

1.0.2g-1ubuntu4.4

1.0.2g-1ubuntu4.5

1.0.2g-1ubuntu4.6

1.0.2g-1ubuntu4.8

1.0.2g-1ubuntu4.9

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "libssl1.0.0-udeb-dbgsym": "1.0.2g-1ubuntu4.10",
            "libssl-dev": "1.0.2g-1ubuntu4.10",
            "libssl1.0.0": "1.0.2g-1ubuntu4.10",
            "libssl-doc": "1.0.2g-1ubuntu4.10",
            "libcrypto1.0.0-udeb-dbgsym": "1.0.2g-1ubuntu4.10",
            "libssl1.0.0-dbg": "1.0.2g-1ubuntu4.10",
            "libssl-dev-dbgsym": "1.0.2g-1ubuntu4.10",
            "openssl": "1.0.2g-1ubuntu4.10",
            "openssl-dbgsym": "1.0.2g-1ubuntu4.10",
            "libssl1.0.0-udeb": "1.0.2g-1ubuntu4.10",
            "libssl1.0.0-dbgsym": "1.0.2g-1ubuntu4.10",
            "libcrypto1.0.0-udeb": "1.0.2g-1ubuntu4.10"
        }
    ]
}