Key Management Errors Affecting openssl package, versions <1.1.1-1


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
4.79% (93rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-OPENSSL-374016
  • published12 Jun 2018
  • disclosed12 Jun 2018

Introduced: 12 Jun 2018

CVE-2018-0732  (opens in a new tab)
CWE-320  (opens in a new tab)

How to fix?

Upgrade Debian:unstable openssl to version 1.1.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).

References

CVSS Scores

version 3.1