vulnerability
Ubuntu: (CVE-2018-1000159): tlslite-ng vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Apr 18, 2018 | Jun 26, 2025 | Jun 26, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Apr 18, 2018
Added
Jun 26, 2025
Modified
Jun 26, 2025
Description
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: ct_check_cbc_mac_and_pad(); line "end_pos = data_len - 1 - mac.digest_size" 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.
Solution
no-fix-ubuntu-package
References
- CVE-2018-100015
- https://attackerkb.com/topics/CVE-2018-100015
- URL-https://github.com/tomato42/tlslite-ng/pull/234
- URL-https://github.com/tomato42/tlslite-ng/pull/234/commits/3674815d1b0f7484454995e2737a352e0a6a93d8
- URL-https://github.com/tomato42/tlslite-ng/pull/235
- URL-https://github.com/tomato42/tlslite-ng/pull/235/commits/e5e9145558f4c1a81071c61c947aa55a52542585
- URL-https://www.cve.org/CVERecord?id=CVE-2018-1000159
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