UBUNTU-CVE-2018-1000159

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Source
https://ubuntu.com/security/CVE-2018-1000159
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000159.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-1000159
Upstream
Published
2018-04-18T19:29:00Z
Modified
2025-10-24T04:47:20Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

tlslite-ng version 0.7.3 and earlier, since commit d7b288316bca7bcdd082e6ccff5491e241305233 contains a CWE-354: Improper Validation of Integrity Check Value vulnerability in TLS implementation, tlslite/utils/constanttime.py: ctcheckcbcmacandpad(); line "endpos = datalen - 1 - mac.digestsize" that can result in an attacker manipulating the TLS ciphertext which will not be detected by receiving tlslite-ng. This attack appears to be exploitable via man in the middle on a network connection. This vulnerability appears to have been fixed after commit 3674815d1b0f7484454995e2737a352e0a6a93d8.

References

Affected packages

Ubuntu:16.04:LTS / tlslite-ng

Package

Name
tlslite-ng
Purl
pkg:deb/ubuntu/tlslite-ng@0.5.1-1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.5.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-tlslite-ng",
            "binary_version": "0.5.1-1"
        },
        {
            "binary_name": "python3-tlslite-ng",
            "binary_version": "0.5.1-1"
        }
    ]
}