Key Management Errors Affecting libopenssl1_1 package, versions <1.1.0h-4.3.1


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
5.23% (93rd percentile)

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  • Snyk IDSNYK-SLES150-LIBOPENSSL11-2762939
  • published14 Apr 2022
  • disclosed23 Jul 2018

Introduced: 23 Jul 2018

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

How to fix?

Upgrade SLES:15.0 libopenssl1_1 to version 1.1.0h-4.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libopenssl1_1 package and not the libopenssl1_1 package as distributed by SLES. See How to fix? for SLES:15.0 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