CVE-2018-1000159

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Summary

CVECVE-2018-1000159
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-04-18 19:29:00 UTC
Updated2020-08-24 17:37:00 UTC
Descriptiontlslite-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.

Risk And Classification

Problem Types: CWE-354

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Tlslite-ng Project Tlslite-ng All All All All

References

ReferenceSourceLinkTags
verify the mac even if the padding is 1 byte long by tomato42 · Pull Request #234 · tlsfuzzer/tlslite-ng · GitHub MISC github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 981118 Python (pip) Security Update for tlslite-ng (GHSA-cwh5-3cw7-4286)

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